Facebook is vulnerable to hackers who can alter profile information without users' knowledge. Many pictures uploaded daily could contain viruses, though Facebook checks uploads it cannot catch all newly created viruses. Additionally, hackers create fake Facebook login pages that steal users' account details when they enter their credentials. Facebook can also be addictive due to frequent checking and time spent on activities with friends, wasting much time that could be used elsewhere. Employers sometimes view applicants' social media profiles and may deny jobs if unprofessional content is found. Using Facebook also compromises privacy as all personal updates are visible to connected friends.

2. It is no surprise that Facebook is vulnerable to
attacks, and several hackers actively alter
people’s profile information, on daily basis. There
are hundreds of examples of this. Many Facebook
and ex-Facebook users can tell you that they
noticed change in their profile information while
they were not logged in.
Also, lots of pictures are uploaded on Facebook
every day. Yes, Facebook does check every upload
for viruses but remember Facebook or any other
website can’t check for all kind of viruses,
particularly those which are recently released. On
opening those virus-attached pictures, you create
danger to your data and your computer.

3. Many hackers have similar
websites to Facebook. They
continuously send emails to
people asking to log in to their
account to check new photos of
their friends, or similar
message. When the user opens
the website, it looks 100%
Facebook, then he enters his
user id and password, not
knowing that his account details
is being stolen by a hacker.

4. One of the biggest Facebook disadvantages is that it
addictive or can become addictive easily. Once you
get connected with your Facebook friends you will
realize how frequently you open Facebook and also
spend so much time in commenting, viewing other’s
pictures, playing games or doing other stuff. Many
people know drawbacks of using Facebook but can’t
stop using it.
Many people use Facebook day and night without
thinking how much time they have wasted on it, and
that they could have done more important work
during that time

5. If you are applying for a new job, you know your
chances of getting that job may be so much
reduced because of your social networking website
profile page? Often employers search for applicants'
social networking website’s profile page to know
more about you. Maybe you have put some
humorous pictures in your profile or maybe you
have entered wrong information (maybe just for
fun) in your profile. Your employer will be shocked
to see all that and you will not be given the job
offer.

6. You obviously not want
your personal
information exposed to
every friend of yours.
On Facebook your
personal life updates
come to the notice of
all your friends, and so
your privacy is
compromised.
These were the
disadvantages of using
Facebook. So what are
you thinking now, will
you still use Facebook?