Continued Protection
Now that you’ve set up the initial
protection for your system, you have to continue to protect the
system. You wouldn’t lock your car, and then leave the keys
sitting on the hood of the car. You wouldn’t lock your house,
and then leave the key hanging out of the door knob (not on
purpose anyway). Having the protection isn’t enough – you have
to help that protection to protect you.
Continued protection isn’t nearly
as complicated, or as time consuming, as getting the initial
protection set up was. The problem is reminding yourself to do
what needs to be done. This is where the task scheduler on your
system comes in handy.
You can use the task scheduler to
run your virus program, your spyware remover program, your
backups, or any other types of jobs such as this. You simply
start up the task manager, tell it what programs you want it to
run, and when you want them to run. It is ideal to set these
things up to run when they won’t interfere with work that you
want or need to do on the computer – but your computer will need
to be turned on for this to happen.
When downloading files, make sure
that the file is coming from a trusted source – and then don’t
trust it anyway. When the download window pops up, you have the
choice to save the program to a disk, or run it. Always choose
to save it to your disk. This way, you can scan it with your
virus protection before opening it.
When you start to install
downloaded programs, make sure you read the license agreement.
The license agreement won’t always tell you if there is spyware
or adware included with the program, but most times, it will.
Read it carefully, and make sure you understand what you are
reading before you allow the program to install on your system.
When in doubt – don’t.
There is nothing that you can do
about the security on another person’s system. You can only
control the protection on your own system. Therefore, if
possible, avoid file sharing of all types. Never allow anyone to
have remote access to your computer, unless it is technical
support at your computer manufacturers company, and the remote
access is initiated with your permission.
When people upload files to a
server for the purpose of sharing the file with you, make sure
that you scan it with your up-to-date virus protection before
you open it. Pictures are nice, and people like to send pictures
to other people – either through email or instant messengers.
However, there are sites, such as WebShots at
http://www.webshots.com that will allow you to post your
pictures on the Internet – which is much safer. You can control
who sees your pictures by making them private. Only those that
you invite can see the pictures, and you don’t have to worry
about sending or receiving viruses.
Avoid malicious websites. A large
majority of pornographic and hacker websites contain malicious
scripts that are meant to either damage your system, or collect
information about you. Learn how to use your browsers security
zone feature. Your browser should warn you if you are trying to
go to an unsafe or untrusted website. Pay attention to the
warnings. Avoid sites that are known for their malicious
content, such as pornographic sites, hacking sites, and game
cheat sites.
Turn your computer off. When you
are not using the system, log out, and turn the system off. Of
course, if you have tasks that are scheduled to run, please note
that your system will need to be turned on during that time –
but other than this, simply turn it off. If you are using the
computer, but your work does not require you to be connected to
the Internet, log off. If you are using a DSL connection, turn
off the DSL modem as well. Make sure that you are completely
disconnected from the Internet during times that you are unable
to monitor your computer.
Finally, use the check list below
each week to ensure that your system remains secure:
_____ Make sure your virus scan is
up-to-date. Run a virus scan.
_____ Make sure your spyware
removal software is up-to-date, and run it to remove adware and
spyware.
_____ If you use anti-Trojan
software, make sure it is up-to-date, and run it to check for
Trojan horses.
_____ Make sure your operating
system is up-to-date.
_____ Make sure your browser is
up-to-date.
_____ Make sure other software you
use, such as instant messengers, is up-to-date.
_____ Using your browser, empty
the history, cookies, saved passwords, and cache.
_____ Back up your files and
documents, after you know that your system is clean.
_____ Change your computer’s
password frequently, never allowing anyone the chance to figure
out what it is.
Keep in mind that the software
that you have can only do so much to protect your system without
your help. You need to make sure that you are taking the
necessary steps to help protect your computer on a regular
basis.
If a virus, worm, or Trojan horse
somehow creeps past all of your systems defenses, don’t panic.
You have a couple of different options to deal with it. First,
you can reformat your hard drive. In most cases, this is just a
matter of reinstalling your operating system from the original
disk, such as the Window’s XP installation disk. However, this
means that you will lose all of the information that you
currently have on your computer. If you have backups that were
made before you got the virus, worm, or Trojan horse, this
should not be a problem, however, once you have a virus, do not
backup your information, and then put those files back on the
system once you’ve cleaned it up – that will defeat the purpose.
When reinstalling programs or files from backup disks, make sure
you use your virus scanner to scan the disks for problems first.
The other option is to clean the
virus, worm, or Trojan horse. You can find directions for
getting rid of all of these things at:
http://securityresponse.symantec.com/avcenter/vinfodb.html .
Here, you can find information on all of the known viruses,
worms, and Trojan horses. However, the directions for removing
the problems do require some technical knowledge. If you read
the directions carefully, and do a little research, you should
be able to clean up the problem yourself. The important thing is
that you avoid visiting your banks website, or other websites
where personal information or banking information comes into
play, while the problem is on your system. The best thing you
can do is visit the site, look up the information for removing
the problem, and then log off the Internet.
Once you think you’ve removed the
problem, proceed with caution until you are sure. Completely
shut down your system, wait at least one minute, and then
restart your computer. Pay close attention and make sure that it
is operating as it was before you got the virus, worm, or Trojan
horse. Then, connect to the Internet, and visit sites that do
not require login information. Make sure that your system is
running properly, and that all problems are gone before
attempting to do anything that would allow a program or a person
to obtain your personal information. Run your virus scan,
anti-Trojan software, and spyware remover again to make sure
that the infection is completely gone.
It is important to note that
programs that detect and remove viruses are not written and
included in virus definition updates until a virus actually
exists. The writers of such programs do not notify the virus
protection software companies before distributing the virus.
Obviously, it is possible to have a virus on your system that
your virus protection software cannot detect, or remove. You
have to pay attention to your system, and know what is normal,
and what is not normal – just like you know what normal behavior
or noises for your automobile are – and what is not normal. In
the case of brand new viruses, you have to identify what is
different about your system, and how the changes occurred.
This is a lot easier said than
done, and may require the help of a professional technical
support person. However, there is a program called an integrity
monitor that would be quite useful in this situation. This type
of program tells you what files have changed, making it easier
to figure out what has happened to your system. You can download
a free integrity monitor called GFI LANguard System Integrity
Monitor from:
http://www.gfi.com/lanselm/lanselmfreeware.htm . This
software detects intruders on a system, gathers evidence, finds
the source of the intrusion, logs which files have changed, and
can even be set up to monitor your website, if you have one.
This will allow you to change files back to their original
state, should your system become compromised.
If you are unable to detect what
changes have been made to your system, you have two choices. You
can reformat your hard drive, and start all over, or you can
wait until the virus definitions for your virus scanning
software are updated with detection and removal capabilities of
the new virus that you are infected with. Waiting it out could
be dangerous, and is not recommended.
You should also strongly consider
purchasing computer locks, to literally lock your computer down.
If someone breaks into your home, they will pick up your
computer and leave with it. Using computer locks may or may not
prevent this, but using the locks will definitely slow them
down. In most cases they simply want to sell the computer for
cash, but in many instances, they aren’t interested in the
system, they are interested in the information on the system,
and by picking it up and walking out with it, they will have the
time necessary to crack all of your system passwords, and gain
access to the information that will net them a much larger
profit than simply selling the computer system.