Protecting Your Privacy
Before submitting your email address or other personal information
online, you need to be sure that the privacy of that information
will be protected. To protect your identity and prevent an attacker
from easily accessing additional information about you, avoid providing
certain personal information such as your birth date and social security
number online.
How do you know if your privacy is being
protected?
- Privacy policy - Before submitting your name, email address,
or other personal information on a web site, look for the site's
privacy policy. This policy should state how the information will
be used and whether or not the information will be distributed to
other organizations. Companies sometimes share information with
partner vendors who offer related products or may offer options
to subscribe to particular mailing lists. Look for indications that
you are being added to mailing lists by default—failing to deselect
those options may lead to unwanted spam. If you cannot find a privacy
policy on a web site, consider contacting the company to inquire
about the policy before you submit personal information, or find
an alternate site. Privacy policies sometimes change, so you may
want to review them periodically.
- Evidence that your information is being encrypted - To
protect attackers from hijacking your information, any personal
information submitted online should be encrypted so that it can
only be read by the appropriate recipient. Many sites use SSL, or
secure sockets layer, to encrypt information. Indications that your
information will be encrypted include a URL that begins with "https:" instead
of "http:" and a lock icon in the bottom right corner of the window.
Some sites also indicate whether the data is encrypted when it is
stored. If data is encrypted in transit but stored insecurely, an
attacker who is able to break into the vendor's system could access
your personal information.
What additional steps can you take
to protect your privacy?
- Do business with credible companies - Before supplying
any information online, consider the answers to the following questions:
do you trust the business? is it an established organization with
a credible reputation? does the information on the site suggest
that there is a concern for the privacy of user information? is
there legitimate contact information provided?
- Do not use your primary email address in online submissions -
Submitting your email address could result in spam. If you do not
want your primary email account flooded with unwanted messages,
consider opening an additional email account for use online (see
Reducing
Spam for more information). Make sure to log in to the account
on a regular basis in case the vendor sends information about changes
to policies.
- Avoid submitting credit card information online - Some
companies offer a phone number you can use to provide your credit
card information. Although this does not guarantee that the information
will not be compromised, it eliminates the possibility that attackers
will be able to hijack it during the submission process.
- Devote one credit card to online purchases - To minimize
the potential damage of an attacker gaining access to your credit
card information, consider opening a credit card account for use
only online. Keep a minimum credit line on the account to limit
the amount of charges an attacker can accumulate.
- Avoid using debit cards for online purchases - Credit
cards usually offer some protection against identity theft and may
limit the monetary amount you will be responsible for paying. Debit
cards, however, do not offer that protection. Because the charges
are immediately deducted from your account, and attacker who obtains
your account information may empty your bank account before you
even realize it.
Provided by:
US-CERT
Author: Mindi McDowell