10 Most
Harmful Computer Viruses & Their Protections
Computer viruses or
computer viruses have become more harmful and intrusive in recent years,
causing millions in losses worldwide. The 10 most destructive computer
viruses are listed below.
1)
ILOVEYOU
Created by two Filipino programmers. ILOVEYOU is a computer virus that
wreaked havoc around the world with millions of injured.
2) Code
Red
Even after installing a computer virus protection system, code red computers
were still affected.
3)
Melissa
Melissa started out as a word document computer virus that claimed to possess
passwords for numerous pornographic websites. When users downloaded the
file, the macro within the file would start working, automatically sending
emails to the first 50 members of the mailing list.
4)
MyDoom
This virus spreads faster than other viruses. Even the virus protection
does not detect it, it provides unauthorized access to a computer after
blocking the network.
5)
PoisonIvy
This virus attacks the security of the infected computer. In this way, the
attacker could control any computer with ease. The attacker can activate
the speakers, camera and other accessories connected to the computer without
prior notice from the user.
6) Conficker
Conficker is a virus that infects computers running on the Microsoft operating
system. The virus was powerful and infected computers in the government
and private sectors of many countries.
7)
Storm Worm
Storm Worm is a Trojan horse that sent emails with alleged weather
reports. Attached infected files.
8) Zeus
Zeus uses special hidden programs that make it difficult to detect his
presence. Malware spreads through different phishing schemes and automated
downloads.
9) Klez
Klez infects a computer through email. When you open the message, the
macro runs in the background and sends automatic emails to everyone on the
mailing list. The virus was able to disable the virus protection available
on the computer.
10)
Stuxnet
Stuxnet can be considered as the best example of a virus created with the aim
of becoming a weapon of cyber warfare to disrupt Iran's nuclear program.
How can I stay safe from viruses?
Computer
viruses are a modern related fact of life. Antivirus Software is
necessary, and both it and the database it uses must be kept up to date. Computer
viruses are a fact of modern life, connected to the Internet. At best,
they are annoying animals sucking performance, but at worst, kiss all your
details, and maybe your bank account or identity, goodbye. We all have to
take steps to make sure our computers are safe, or we run the risk of
infection. Complacency is not simply an option. And yet, even after
all the news, all the horror stories, all the warnings, and even after so long,
complacency is still very common.
There are
four important steps you must take:
1. Install and run a Virus Fighting Program There are many out there. Personally, I keep Malwarebytes Anti Malware on my main machine. He was one of the first to recognize and clean up after some freshly penetrating viral infections, and he has earned a very good reputation.
I also run and have run other antivirus software with good results on some of my other machines. Specifically, I have come across the free versions of AVG and Avira. I've also heard good things about the free version of Avast. While I'm not a huge fan of their product offerings, Symantec maintains one of the best reference sites for virus safety issues. Not all virus scanners catch all viruses. It is recommended to have a selection of additional virus scanners to run as a "second level". Most downloadable virus scanning solutions often include free trials, which can also be useful as one-time second-level scans. Download and install the package of your choice. Now.
2. Updating the anti-virus database
After installing your antivirus
software, your first step should be to update the database of virus
signatures that came with it. New viruses are created every day, and the
databases used by antivirus programs are updated frequently as well. You
need to update to the latest database for the program immediately. Most of
the feature updates programs that locate, download and install the latest
databases on a regular and automatic basis. Make sure it is enabled.
3. Perform a regular scan Most
anti-virus programs work automatically. Once installed, these programs
are configured to scan all incoming and outgoing files, and many times the hook
in your email in some way, to verify that your received email is clean as
well. Unless you know what you are doing, make sure this "real
time" scan is enabled. (Although email scanning can be disabled if it
interferes with your email program.) It is also recommended to periodically run
scans of your hard drive (s). Certainly the first time you install the Antivirus Software you
should run a full scan. Then, depending on how heavily used your computer
is, you should run a regular scan as well. Some programs allow you to
schedule a scan to happen automatically. In my case, for example, since my
computers are on 24 hours a day, I can schedule the full virus scan at night,
while I am asleep.
4. Keep Windows-To-Date Visit
Windows Update regularly, or just turn on the automatic update feature in
Windows. All Antivirus
Software has bugs. Some of those errors are used to create exploits
that virus writers take advantage of to create viruses that can infect your
system. As these errors are found, Microsoft fixes the affected components
in the operating system, and makes the fixes available for automatic
installation and download through Windows Update. The "problem"
is that not once are the bugs discovered and advertised, and even when the fix
is available, virus writers get busy writing viruses that still exploit them.
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