Cookie 5 6 3 – Protect Your Online Privacy Concerns

1. Cookie 5 6 3 – Protect Your Online Privacy Concerns And Guidelines
2. Cookie 5 6 3 – Protect Your Online Privacy Concerns Examples
3. Cookie 5 6 3 – Protect Your Online Privacy Concerns And Solutions

Internet privacy is a major concern today. It has raised certain ethical issues. Advertisers track your web activities and intrude on your privacy. Your online transactions, emails, and social networking profiles are scanned, thus invading your online privacy. There could be valid reasons for this. But is this ethical? The Internet privacy needs of users should be catered to. To protect your privacy, we will take steps to verify your identity before fulfilling your request so that we can ensure you are the owner of the account making the request. Our California resident consumer request metrics for the previous year can be found here. Blocking Cookies. Blocking third party cookies on your browser is another good way to maintain some anonymity while online. Blocking cookies makes it so websites will have a harder time. For example, we will remove developers' access to your Facebook and Instagram data if you haven't used their app in 3 months, and we are changing Login, so that in the next version, we will reduce the data that an app can request without app review to include only name, Instagram username and bio, profile photo and email address.

April 2002

by Stanton McCandlish, EFF Technology Director

Vers. 2.0 - Apr. 10, 2002

Note: Mention of specific product, service or company names does
not constitute EFF endorsement or recommendation. Examples and links
are provided as starting points for readers, who must make up their
own minds about how much security they need and whether particular
offerings will suit their needs.

For information about the law and technology of government surveillance in the United States, check out EFF's Surveillance Self-Defense project.

1) Do not reveal personal information inadvertently.

You may be 'shedding' personal details, including e-mail addresses
and other contact information, without even knowing it unless you
properly configure your Web browser. In your browser's 'Setup',
'Options' or 'Preferences' menus, you may wish to use a pseudonym instead of your real name, and
not enter an e-mail address, nor provide other personally identifiable
information that you don't wish to share. When visiting a site you
trust you can choose to give them your info, in forms on their site;
there is no need for your browser to potentially make this information
available to all comers. Also be on the lookout for system-wide
'Internet defaults' programs on your computer (some examples include
Window's Internet Control Panel, and MacOS's Configuration Manager,
and the third-party Mac utility named Internet Config). While they are useful
for various things, like keeping multiple Web browers and other
Internet tools consistent in how the treat downloaded files and such,
they should probably also be anonymized just like your browser itself,
if they contain any fields for personal information. Households with
children may have an additional 'security problem' - have you set
clear rules for your kids, so that they know not to reveal personal
information unless you OK it on a site-by-site basis?

2) Turn on cookie notices in your Web browser, and/or use cookie management software or infomediaries.

'Cookies' are tidbits of information that Web sites store on your
computer, temporarily or more-or-less permanently. In many cases
cookies are useful and inocuous. They may be passwords and user IDs,
so that you do not have to keep retyping them every time you load a
new page at the site that issued the cookie. Other cookies however, can be used for 'data
mining' purposes, to track your motions through a Web site, the time
you spend there, what links you click on and other details that the
company wants to record, usually for marketing purposes. Most cookies
can only be read by the party that created them. However, some companies
that manage online banner advertising are, in essence, cookie sharing rings. They
can track which pages you load, which ads you click on, etc., and share this information
with all of their client Web sites (who may number in the hundreds, even thousands.) Some
examples of these cookie sharing rings are DoubleClick, AdCast
and LinkExchange. For a demonstration of how they work, see:
http://privacy.net/track/

Browsers are starting
to allow user control over cookies. Netscape, for example, allows you
to see a notice when a site tries to write a cookie file to your hard
drive, and gives you some information about it, allowing you to decide
whether or not to accept it. (Be on the lookout for cookies the
function of which is not apparent, which go to other sites than the one you are trying to load, or which
are not temporary). It also allows you to automatically block all
cookies that are being sent to third parties (or to block all cookies,
entirely, but this will make some sites inoperable). Internet
Explorer has a cookie management interface in addition to
Netscape-like features, allowing you to selectively enable or disable
cookies on a site-by-site basis, even to allow cookies for a site
generally, but delete a specific cookie you are suspicious about. With
Internet Explorer you can also turn on cookies for a site temporarily
then disable them when you no longer need them (e.g., at an online
bookstore that requires cookies to process an order, but whom you
don't want to track what books you are looking at, what links you are
following, etc., the rest of the time.) Turning on cookie warnings
will cause alert boxes to pop up, but after some practice you may learn
to hit 'Decline' so fast that you hardly notice them any more. The
idea is to only enable cookies on sites that require them AND whom you
trust.

You may also wish to try out 'alternative' browsers like
Mozilla (Windows, Mac, Linux), Opera (Windows, Mac, Linux), Konqueror (Linux),
and iCab (Mac), which may offer better cookie management.

You can also use cookie management software and services. One example is
the Internet Junkbuster Proxy ( http://www.junkbusters.com/ht/en/ijb.html ).
It runs on Win95/98/NT and

Unix/Linux

(no Mac version), and can selectively
block cookies for you (and banner ads, to boot). interMute ( http://www.intermute.com/ )

does likewise (and more - blocks popup windows, etc.; only runs under Windows).

Another Windows-only
solution is AdSubtract ( http://www.adsubtract.com/ )
A comparable product (Linux, Solaris, Windows) is GuideScope ( http://www.guidescope.com/home/ )

A Java-based solution called Muffin ( http://muffin.doit.org/ ) is also available. While it will run
on Mac, Windows and Unix systems, it is definitely for 'power users', as it is complicated
to set up and operate effectively.

Another recent option (Linux, Mac, Windows) is the

( http://www.webwasher.com/ ), which has advanced cookie filtering capabilities,
especially with the Seclude-It and Secretmaker plug-ins available at the same site.
One more (Windows) is CookiePal ( http://www.kburra.com/cpal.html ),
and yet another (Windows) is ( http://www.thelimitsoft.com/cookie.html ).

There are also numerous 'cookie eater' applications,
some which run on a schedule or in the background, that delete cookie files for you. As with turning off
cookies entirely, you may have trouble accessing sites that require certain cookies (though
in most cases the worst that will happen is that you'll have to re-enter a login ID and password
you thought were saved.) 'Eating' the cookies periodically still permits sites to track what
you're doing for a short time (i.e., the time between successive deletion of your cookie file),
but thwarts attempts to discern and record your actions over time.

Yet another option is to use an 'infomediary' (some are home-use software products, others may be network-based services),
such as SeigeSoft's
SiegeSurfer ( http://www.siegesoft.com/_html/tutorial.asp ),
Zero Knowledge Systems' Freedom

( http://www.freedom.net ), among others. These products/services act as a proxy or
shield between you and sites you visit, and can completely disguise to Web sites where you are coming from
and who you are (and intercept all cookies). Most are Windows-only at this point, though
Orangatango ( http://www.orangatango.com/ ), and SafeWeb

and ( http://www.safeweb.com ) also offer
such services that are Web-based and not platform-dependent.

WARNING: Do not confuse honest infomediaries
with 'identity managmenet services' like Microsoft's Passport service or Novell's DigitalMe. While you may gain some
temporary convenience at sites that support them, you'll lose essential privacy, because these services are not
there to serve you but to serve marketing purposes by collecting a vast array of information about you and selling it.

The best solution doesn't exist yet: Full cookie management abilities built
into the browsers themselves. Only increased user pressure on Microsoft, Netscape
and other browser makers can make this happen. Users should ultimately be able
to reject cookies on a whole-domain basis, reject all third-party cookies by default, reject all cookies that are not essential
for the transaction at hand, receive notice of exactly what a cookie is intended for,
and be able to set default behaviors and permissions rather than have to interact with cookies on a page-by-page
basis. This just isn't possible yet. You may wish to contact the company that makes your browser software and
demand these essential features in the next version.

3) Keep a 'clean' e-mail address.

When mailing to unknown parties; posting to newsgroups, mailing
lists, chat rooms and other public spaces on the Net; or publishing a
Web page that mentions your e-mail address, it is best to do this from
a 'side' account, some pseudonymous or simply alternate address, and
to use your main or preferred address only on small, members-only
lists and with known, trusted individuals. Addresses that are posted
(even as part of message headers) in public spaces can be easily
discovered by spammers (online junk mailers) and added to their list of
targets. If your public 'throw away' address gets spammed enough to become
annoying, you can simply kill it off, and start a new one. Your
friends, boss, etc., will still know your 'real' address. You can use
a free (advertising-supported) e-mail service provider like Yahoo Mail
or Hotmail for such 'side' accounts. It is best to use a 'real'
Internet service provider for your main account, and to examine their
privacy policies and terms of service, as some 'freemail' services may have
poor privacy track records. You may find it works best to use an
e-mail package that allows mulitiple user IDs and addresses (a.k.a.
'personalities', 'aliases') so that you do not have to switch between multiple
programs to manange and use more than one e-mail address

(though you may
have to use a Web browser rather than an e-mail program to read your
mail in your 'throw away' accounts - many freemail providers do not
allow POP or IMAP connections). If you are 'required'
to give an e-mail address to use a site (but will not be required to
check your mail for some kind of access code they send you), you can
use 'someuser@example.com' (example.com is a non-existent site,
set up by the Internet standards to be used as an example that will
never accidentally coincide with anyone's real e-mail address, which
is always a danger if you just make up one off the top of your head.)

4) Don't reveal personal details to strangers or just-met
'friends'.

The speed of Internet communication is often

mirrored

in rapid online
acquaintanceships and friendships. But it is important to realize that
you don't really know who these people are or what they are like in
real life. A thousand miles away, you don't have friends-of-friends
or other references about this person. Be also wary of face-to-face
meetings. If you and your new e-friend wish to meet in person, do it
in a public place. Bringing a friend along can also be a good idea.
One needn't be paranoid, but one should not be an easy mark, either.
Some personal information you might wish to withhold until you know
someone much better would include your full name, place of employment,
phone number, and street address (among more obvious things like
credit card numbers, etc.) Needless to say, such information should
not be put on personal home pages. (If you have a work home page, it
may well have work contact information on it, but you needn't reveal
this page to everyone you meet in a chat room.) For this and other
reasons, many people maintain two personal home pages, a work-related
one, and an 'off duty' version. In the commercial sector, too, beware
'fast-met friends'. A common

'social engineering'

form
of industrial espionage is to befriend someone online just long
enough to get them to reveal insider information.

5) Realize you may be monitored at work, avoid sending highly
personal e-mail to mailing lists, and keep sensitive files on your
home computer.

In most US states and many if not most countries, employees have little if any privacy protection
from monitoring by employers. When discussing sensitive matters in
e-mail or other online media, be certain

with whom you are communicating

. If
you replied to a mailing list post, check the headers - is your reply
going to the person you think it is, or to the whole list? Also be
aware that an increasing number of employers are monitoring and
recording employee Web usage, as well as e-mail. This could compromise
home banking passwords and other sensitive information. Keep private
data and private Net usage

private

, at home.

See this CNN/IDG article on 'snoopware' (which may not be limited to your office..):

6) Beware sites that offer some sort of reward or prize in
exchange for your

contact information or other personal details

.

There's a very high probability that they are gathering this
information for direct marketing purposes. In many cases your name and
address are worth much more to them because they can sell it to other
marketers (who can do the same in turn..) than what
you are (supposedly) getting from them. Be especially wary of
sweepstakes and contests. You probably won't win, but the marketer
sure will if you give them your information.

7) Do not reply to spammers, for any reason.

'Spam', or unsolicited bulk e-mail, is something you are probably
already familiar with (and tired of). If you get a spammed
advertisment, certainly don't take the sender up on whatever offer
they are making, but also don't bother replying with 'REMOVE' in the
subject line, or whatever (probably bogus) unsubscribe instructions
you've been given). This simply confirms that your address is being
read by a real person, and you'll find yourself on dozens more
spammers' lists in no time. If you open the message, watch your
outgoing mail queue to make sure that a 'return receipt' message was
not generated to be sent back to the spammer automatically. (It is
best to queue your mail and send manually, rather than send
immediately, so that you can see what's about to go out before it's
actually sent. You should also turn off your mailer's automatic
honoring of return receipt requests, if any.) If you have a good
Internet service provider, you may
be able to forward copies of spam e-mail to the system administrators
who can route a complaint to the ISP of the spammer (or if you know a
lot about mail headers and DNS tools, you can probably contact these
ISPs yourself to complain about the spammer.) If you are getting
spammed a lot, there are a variety of filters and anti-spam
services available, including:

Spam Hater ( http://www.cix.co.uk/~net-services/spam/spam_hater.htm ) for Windows users;

TAG ( http://alcor.concordia.ca/topics/email/auto/procmail/spam ) for experienced Unix users;

SpamBouncer ( http://www.spambouncer.org ) for experienced Unix users (works well with TAG);

BrightMail ( http://www.brightmail.com/ ) for ISPs;

SpamCop ( http://spamcop.net/ ) for anyone;

More information on fighting spam is available at:

Elsop's Anti-Spam Page ( http://www.elsop.com/wrc/nospam.htm );

MaximumDownforce's Info-n-Links Page( http://www.maximumdownforce.com/hotlinks.html );

Whew's Anti-Spam Campaign ( http://www.whew.com/Spammers/ ). Expert bundle 3 1 – templates for ms office.

Many of these are difficult to use for novices, and some require Unix
expertise. Others are services that deal with ISPs only, not end users.

8) Be conscious of Web security.

Never submit a credit card number or other highly sensitive
personal information without first making sure your connection is
secure (encrypted). In Netscape, look for an closed lock (Windows) or unbroken key (Mac) icon at the
bottom of the browser window. In Internet Explorer, look for a closed
lock icon at the bottom (Windows) or near the top (Mac) of the browser window.
In any browser, look at
the URL (Web address) line - a secure connection will begin 'https://'
intead of 'http://'. If you are at page that asks for such information
but shows 'http://' try adding the 's' yourself and hitting enter to
reload the page (for Netscape or IE; in another browser, use whatever method is required
by your browser to reload the page at the new URL). If you get an
error message that the page or site does not exist, this probably
means that the company is so clueless - and careless with your
information and your money - that they don't even have Web security.
Take your business elsewhere.

Your browser itself gives away information about you, if your IP address
can be tied to your identity (this is most commonly true of DSL and broadband
users, rather than modem users, who are a dwindling minority). For a demo
of how much detail is automatically given out about your system by your
browser, see: http://privacy.net/analyze/ .

Also be on the lookout for 'spyware' - software that may be included
with applications you install (games, utilities, whatever), the
purpose of which is to silently spy on your online habits and other
details and report it back to the company whose product you are using.
One MS Windows solution for disabling spyware is the Ad-aware program
(shareware, from http://www.lavasoft.de/ ),
which can remove spyware from your computer; it is based on a large
collaboratively maintained database of information about spyware.
Linux and Mac products of this sort are likely to appear soon.

Java, Javascript and ActiveX can also be used for spyware purposes.
Support for these scripting languages can be disabled in your
browser's configuration options (a.k.a. preferences, settings,
or properties). It is safest to surf with them turned off,
and only turn them on when a site you trust and want to use
requires them. If you don't know if your browser supports these
languages or don't know if they are turned on you can use BrowserSpy
to find out (along with a lot of other information about your Web
browsing software): http://gemal.dk/browserspy/

Another form of spyware consists of 'webbugs', which typically
manifest themselves as invisible or nearly invisible image files
tied to cookies and javascripts that track your Web usage.
See http://www.google.com/search?hl=en&q=webbugs+%22web+bugs%22
for more information on webbugs. See also this webbug FAQ, http://www.nthelp.com/OEtest/web_bug_faq.htm for more details.
Dealing with webbugs when they are embedded in an otherwise legitimate page
is thorny, as there isn't a surefire way to distinguish between webbugs and
run-of-the-mill image files. But see the Privacy Foundation's
Bugnosis webbug detector ( http://www.bugnosis.org/ - Windows MSIE only).
When webbugs are loaded into popup pages, the solution is to close the popups
(usually a small page with an ad, though some of them are 'micropages'
that you can barely see. A few may even use javascript tricks to keep
you from closing them. If this happens, close all other browser windows,
then you should be able to close the bug window). Another tip for defeating
webbugs is to reject any cookies from Doubleclick, AdCast, LinkExchange and other
'ad exchange networks' (cookie sharing rings), and any other cookies that
are not from the site you are currently visiting (most third-party cookies
are basically webbugs). Lastly on this topic, be aware that HTML-capable
e-mail programs and Usenet newsreaders make webbugs work in your e-mail
and newsgroups. If your mailer or newsreader has an option to turn off
cookie support, you should certainly do so. There is hardly any imaginable
legitimate use for a cookie in an email or a newsgroup posting.

9) Be conscious of home computer security.

On the other side of the coin, your own computer may be a trouble
spot for Internet security.

If you have a DSL line, broadband cable modem or other connection
to the Internet that is up and running 24 hours (including T1 at the office without a firewall
or NAT),

unlike a modem-and-phone-line connection, be sure to turn your computer off
when you are not using it. Most home PCs have pitifully poor security
compared to the Unix workstations that power most commercial Web
sites. System crackers search for vulnerable, unattended DSL-connected
home computers, and can invade them with surprising ease, rifiling
through files looking for credit card numbers or other sensitive data,
or even 'taking over' the computer and quietly using it for their own
purposes, such as lauching attacks on other computers elsewhere -
attacks you could initially be blamed for. Firewall hardware and software is
another option that can protect you from these kinds of attacks (available
at any computer store; freeware and shareware implementations may be
available at sites like http://www.shareware.com
or http://www.download.com.

10) Examine privacy policies and seals.

When you are considering whether or not to do business with a Web
site, there are other factors than a secure connection you have to consider that are equally
important to Web security. Does the site provide offline contact
information, including a postal address? Does the site have a
prominently-posted privacy policy? If so, what does it say? (Just
because they call it a 'privacy policy' doesn't mean it will protect
you - read it for yourself. Many are little more than disclaimers
saying that you have no privacy! So read them carefully.) If the
policy sounds OK to you, do you have a reason to believe it? Have you
ever heard of this company? What is their reputation? And are they
backing up their privacy statement with a seal program such as TRUSTe
http://www.truste.org/ or
BBBonline http://www.bbbonline.org/? (While imperfect, such
programs hold Web sites to at least some minimal baseline standards, and may revoke, with much fanfare, the
approval-seal licenses of bad-acting companies that do not
keep their word.) If you see a seal, is it real? Check with the
seal-issuing site to make sure the seal isn't a fake. And examine
terms carefully, especially if you are subscribing to a service rather
than buying a product. Look out for auto-rebilling scams and hidden
fees.

11) Remember that YOU decide what information about yourself to
reveal, when, why, and to whom.

Don't give out personally-identifiable information too easily. Just as
you might think twice about giving some clerk at the mall your home
address and phone number, keep in mind that simply because a site asks
for or demands personal information from you does not mean you have to
give it. You do have to give accurate billing information if you are
buying something, of course, but if you are registering with a free
site that is a little too nosy for you, there is no law (in most places) against
providing them with pseudonymous information. (However, it would
probably be polite to use obviously fake addresses, such as '123 No
Such Street, Nowhere, DC 01010'. If they are generating mailings based
on this information - presumably in accordance with the terms of their
privacy policy - they can probably weed such addresses out and not
waste the postage on them. Definitely do NOT use someone else's real
address!)

However, if you are required to agree to
terms of service before using the free service, be sure those terms
do not include a requirement that you provide correct information,
unless the penalty is simply not being allowed to use the service
any more, and you're willing to pay that price if they figure out
you are not providing them with your actual personally-identifiable
information.

12) Use encryption!

Last but certainly not least, there are other privacy threats
besides abusive marketers, nosy bosses, spammers and scammers. Some
of the threats include industrial espionage, government surveillance,
identity theft, disgruntled former associates, and system crackers.
Relatively easy-to-use e-mail and file encryption software is
available for free, such as Pretty Good Privacy (PGP, available at: http://www.pgpi.org/), which runs on
almost all computers and even integrates seamlessly with most major
e-mail software. Good encryption uses very robust secret codes, that
are difficult if not impossible to crack, to protect your data. You
can also use specialized services (some free, some pay)
that go beyond infomediary services, including running all connections
through a securely encrypted 'tunnel', anonymous dialup, even anonymous
Web publishing. Another type of product is SSH tunnelling (port forwarding) packages, such as FSecure SSH ( http://www.fsecure.com/products/ssh/ ),
and SecureCRT ( http://www.vandyke.com/products/securecrt/ ).

Hopefully some day soon, good encryption and computer security will simply
be included in all ISP services and operating systems, but for now you have to actively
seek out good service providers and add-on products.

For more information on protecting your online privacy:

• EFF Privacy Archive - http://www.eff.org/Privacy/
• 'Protecting Yourself Online' Book -
• TRUSTe's 'Protecting Your Privacy Online' FAQ - http://truste.org/consumers/users_faqs.html
• Privacy Rights Clearinghouse - http://www.privacyrights.org/
• Privacy International - http://www.privacyinternational.org/

By Peter Eckersley, Seth Schoen, Kevin Bankston, and Derek Slater.

Google, MSN Search, Yahoo!, AOL, and most other search engines collect and store records of your search queries. If these records are revealed to others, they can be embarrassing or even cause great harm. Would you want strangers to see searches that reference your online reading habits, medical history, finances, sexual orientation, or political affiliation? Skylab studio 2 5 crack.

Recent events highlight the danger that search logs pose. In August 2006, AOL published 650,000 users' search histories on its website.¹ Though each user's logs were only associated with a random ID number, several users' identities were readily discovered based on their search queries. For instance, the New York Times connected the logs of user No. 4417749 with 62 year-old Thelma Arnold. These records exposed, as she put it, her 'whole personal life.'²

Disclosures like AOL's are not the only threats to your privacy. Unfortunately, it may be all too easy for the government or individual litigants to subpoena your search provider and get access to your search history. For example, in January 2006, Yahoo!, AOL, and Microsoft reportedly cooperated with a broad Justice Department request for millions of search records. Although Google successfully challenged this request,³ the lack of clarity in current law leaves your online privacy at risk.

Search companies should limit data retention and make their logging practices more transparent to the public,⁴ while Congress ought to clarify and strengthen privacy protections for search data. But you should also take matters into your own hands and adopt habits that will help protect your privacy.

The Electronic Frontier Foundation has developed the following search privacy tips. They range from straightforward steps that offer a little protection to more complicated measures that offer near-complete safety. While we strongly urge users to follow all six tips, a lesser level of protection might be sufficient depending on your particular situation and willingness to accept risks to your privacy.

1. Don't put personally identifying information in your search terms (easy)

Don't search for your name, address, credit card number, social security number, or other personal information. These kinds of searches can create a roadmap that leads right to your doorstep. They could also expose you to identity theft and other privacy invasions.

If you want to do a 'vanity search' for your own name⁵ (and who isn't a little vain these days?), be sure to follow the rest of our tips or do your search on a different computer than the one you usually use for searching.

2. Don't use your ISP's search engine (easy)

Because your ISP knows who you are, it will be able to link your identity to your searches. It will also be able to link all your individual search queries into a single search history. So, if you are a Comcast broadband subscriber, for instance, you should avoid using http://search.comcast.net. Similarly, if you're an AOL member, do not use http://search.aol.com or the search box in AOL's client software.

3. Don't login to your search engine or related tools (intermediate)

Search engines sometimes give you the opportunity to create a personal account and login. In addition, many engines are affiliated with other services -- Google with Gmail and Google Chat; MSN with Hotmail and MSN Messenger; A9 with Amazon, and so on. When you log into the search engine or one of those other services, your searches can be linked to each other and to your personal account.

So, if you have accounts with services like Google GMail or Hotmail, do not search through the corresponding search engine (Google or MSN Search, respectively), especially not while logged in.

If you must use the same company's search engine and webmail (or other service), it will be significantly harder to protect your search privacy. You will need to do one of the following:

1. Install two different web browsers to separate your search activities from your other accounts with the search provider. For example, use Mozilla Firefox for searching through Yahoo!, and Internet Explorer for Yahoo! Mail and other Yahoo! service accounts.⁶ You must also follow Tip 6 for at least one of the two browsers.⁷
2. For Google and its services, you can use the Mozilla Firefox web browser and the CustomizeGoogle plugin software. Go to http://www.customizegoogle.com/ and click 'Install.' Restart Firefox and then select 'CustomizeGoogle Options' from the 'Tools' menu. Click on the 'Privacy' tab and turn on 'Anonymize the Google cookie UID.' You must remember to quit your browser after using GMail and before using the Google search engine.⁸ In addition, be sure not to select the 'remember me on this computer' option when you log into a Google service.

If you are using a browser other than Firefox, you can use the GoogleAnon bookmarklet, which you can obtain at http://www.imilly.com/google-cookie.htm. You will need to quit your browser every time you finish with a Google service. Unfortunately, we currently do not know of similar plugins for other search providers.⁹

4. Block 'cookies' from your search engine (intermediate)

If you've gone through the steps above, your search history should no longer have personally identifying information all over it. However, your search engine can still link your searches together using cookies and IP addresses.¹⁰ Tip 4 will prevent tracking through cookies, while Tips 5-6 will prevent IP-based tracking. It's best to follow Tips 3-6 together -- there is less benefit in preventing your searches from being linked together in one way if they can be linked in another.

Cookies are small chunks of information that websites can put on your computer when you visit them. Among other things, cookies enable websites to link all of your visits and activities at the site. Since cookies are stored on your computer, they can let sites track you even when you are using different Internet connections in different locations. But when you use a different computer, your cookies don't come with you.¹¹

From a privacy-protection perspective, it would be best to block all cookies. However, because cookies are necessary for accessing many websites, it may be more convenient (though less privacy-protective) to allow short-lived 'session' cookies. These cookies last only as long as your browser is open; therefore, if you quit your browser, re-open it, and then go back to your search engine, your search provider will not be able to connect your current searches with previous ones via your cookies. Notability v1 05.

Use the following steps to allow only 'session cookies,' and remember to quit your browser at least once a day but ideally after each visit to your search provider's site. We recommend that you use Mozilla Firefox and apply these settings:

1. From the 'Edit' menu, select 'Preferences'
2. Click on 'Privacy'
3. Select the 'Cookies' tab
4. Set 'Keep Cookies' to 'until I close Firefox' ¹²
5. Click on 'Exceptions,' type in the domains of all of your search sites, and choose 'Block' for all of them

Cookie 5 6 3 – Protect Your Online Privacy Concerns And Guidelines

If you use Microsoft Internet Explorer to surf the web:

1. From the Internet Explorer 'Tools' menu, select 'Internet Options'
2. Click on the 'Privacy' tab and then press the 'Advanced' button
3. Click on 'Override automatic cookie handling'
4. Set both 'first party' and 'third party' cookies to 'Block'
5. Select 'Always allow session cookies'

5. Vary your IP address (intermediate)

When you connect to the Internet, your ISP assigns your computer an 'IP address' (for instance, EFF's web server's IP address is 72.5.169.162). Search providers -- and other services you interact with online -- can see your IP address and use that number to link together all of your searches. IP addresses are particularly sensitive because they can be directly linked to your ISP account via your ISP's logs. Unlike cookies, your IP address does not follow your computer wherever it goes; for instance, if you use your laptop at work through AT&T, it will have a different IP address than when you use it at home through Comcast.

If your ISP gives you a changing, 'dynamic' IP address,¹³ or you surf from an office computer that is behind the same firewall as lots of other computers, then this concern is diminished. However, if you have a dynamic IP address on a broadband connection, you will need to turn your modem off regularly to make the address change. The best way to do this is to turn your modem off when you finish with your computer for the day, and leave it off overnight.

On the other hand, if you have an unchanging, 'static' IP address, you will certainly need to use anonymizing software to keep your address private; see Tip 6.

6. Use web proxies and anonymizing software like Tor (advanced)

To hide your IP address from the web sites you visit or the other computers you communicate with on the Internet, you can use other computers as proxies for your own -- you send your communication to the proxy; the proxy sends it to the intended recipient; and the intended recipient responds to the proxy. Finally, the proxy relays the response back to your computer. All of this sounds complicated, and it can be, but luckily there are tools available that can do this for you fairly seamlessly.

Tor (http://www.torproject.org) is a software product that encrypts then sends your Internet traffic through a series of randomly selected computers, thus obscuring the source and route of your requests. It allows you to communicate with another computer on the Internet without that computer, the computers in the middle, or eavesdroppers knowing where or who you are. Tor is not perfect, but it would take a sophisticated surveillance effort to thwart its protections.¹⁴

You also need to make sure that your messages themselves don't reveal who you are. Privoxy (http://www.privoxy.org) helps with this, because it strips out hidden identifying information from the messages you send to web sites. Privoxy also has the nice side benefit of blocking most advertisements and can be configured to manage cookies. (Privoxy comes bundled with Tor downloads.)

You can also use web proxies like Anonymizer's (http://www.anonymizer.com) Anonymous Surfing. This option is more user-friendly but possibly a less effective method of anonymizing your browsing. Anonymizer routes your web surfing traffic through their own proxy server and hides your IP address from whatever web sites you visit. However, Anonymizer itself could in principle have access to your original IP address and be able to link it to the web site you visited; therefore, that service is only as secure as Anonymizer's proxy facilities and data retention practices. While there is no reason to believe that Anonymizer looks at or reveals your information to others (we know the people currently running Anonymizer and they are good folks), there is little opportunity to verify their practices in these regards.

Using Tor and Privoxy is more secure because one untrustworthy proxy won't compromise your search privacy. On the other hand, web proxies like Anonymizer are slightly easier to use at present.

Tor and Privoxy downloads and instructions can be found here: http://www.torproject.org/download.html.en

Conclusion

Tor and Privoxy downloads and instructions can be found here: http://www.torproject.org/download.html.en

Conclusion

If you've implemented all six tips, congratulations -- you're now ready to search the Web safely. These steps don't provide bulletproof protection, but they do create a strong shield against the most common and likely means of invading your privacy via your search history.

September 2006

¹ For more on the disclosure, see http://eff.org/Privacy/AOL.

² See http://www.nytimes.com/2006/08/09/technology/09aol.html.

³ See http://eff.org/Privacy/search for documents related to Google's challenge. The logs were to be used as evidence in a case in which the government is defending the constitutionality of the Child Online Protection Act (COPA). See also http://news.com.com/FAQ+What+does+the+Google+subpoena+mean/2100-1029_3-6029042.html and http://news.com.com/Judge+Google+must+give+feds+limited+access+to+records/2100-1028_3-6051257.html.

⁴ The search providers' have so far been unreasonably tight-lipped about their specific practices regarding search logging. For some insight, see http://news.com.com/Verbatim+Search+firms+surveyed+on+privacy/2100-1025_3-6034626.html?tag=nl and http://www.mercurynews.com/mld/mercurynews/news/breaking_news/15315062.htm.

⁵ Or your MySpace profile, personal blog address, or other similar personal information.

⁶ Advanced tip: you could also use two profiles for one browser. For instance, if you run Mozilla Firefox with the -ProfileManager flag, it will let you choose a profile. To learn more, visit http://mozilla.org/support/firefox/profile. Mozilla Seamonkey has a 'Switch Profile' command in the 'Tools' menu. Pick a different theme/skin for each profile so you can tell which one you are using. To learn more, visit http://kb.mozillazine.org/Profile_Manager. With Internet Explorer, you may need to use two separate Windows user accounts.

⁷ Otherwise, your two separate browsers' activities could be linked by IP address, as discussed below.

⁸ Mail.google.com and google.com leave some additional cookies that will identify you while searching, but which CustomizeGoogle (and GoogleAnon) will not anonymize. Unless you remember to quit your browser, some of those cookies persist even if you logout of Gmail. Future versions of these privacy-protection tools may help fix this problem.

⁹ There is another Firefox plugin intended to protect your search privacy called TrackMeNot (http://mrl.nyu.edu/~dhowe/trackmenot/). At present, we cannot recommend TrackMeNot. For one thing, it may actually make it easier for search engines to link your searches together (the fact that you're using the plugin is distinctive). Moreover, although it may create some uncertainty about aspects of your search history, it does not hide personally identifying information or the bulk of your most sensitive searches. For further criticisms, see http://www.schneier.com/blog/archives/2006/08/trackmenot_1.html.

¹⁰ The search engine may also be able to pick you out of the crowd based on an unusual browser, operating system, language setting, or other atypical HTTP headers. The software recommended in Tip 6 can be used to impede these methods as well.

¹¹ So long as you haven't logged in; see Tip 3.

Cookie 5 6 3 – Protect Your Online Privacy Concerns Examples

¹² You can select 'ask me every time' if you want more control, although the current Firefox user interface is not very good for this purpose. At this time, the Mozilla Seamonkey browser is more suitable if you wish to have fine-grained control over cookies.

¹³ You can find out your IP address by visiting a site like http://myipinfo.net. Ask your ISP if you have trouble determining whether your IP address changes.

Cookie 5 6 3 – Protect Your Online Privacy Concerns And Solutions

¹⁴ For a technical discussion of this subject, see http://www.cl.cam.ac.uk/~sjm217/papers/oakland05torta.pdf.