15 Most Dangerous Computer Viruses in History

Computer security company Kaspersky Lab, the birthday-15, recalling the 15 most dangerous computer virus that has attacked and complex computer networks in the world.
Here are 15 most influential dangerous viruses in history, as stated by Kaspersky in a press release on Tuesday (17/07/2012):

    1986, the Brain, the first PC virus appeared: the virus is spread by writing code in the boot sector or a floppy disk.
    1988, the Morris worm infected about 10 percent of computers connected to the internet (about 6,000 computers).
    1992, Michelangelo, the first virus to massive media attention.
    1995, Concept, the first macro virus.
    1999, Melissa, began the era of e-mail malware that resulted in mass global epidemic.
    2003, Slammer, worms fileless * no file), resulting in a massive epidemic worldwide.
    2004, Cabir: Proof-of-Concept for the first Symbian; transmitted via Bluetooth.
    2006, Leap, the first Mac OS X virus
    2007, the Storm Worm [Zhelatin] pioneered the use of distributed C & C server.
    2008, Koobface, the first malware that makes Facebook a target.
    2008, Conficker, one of the biggest epidemics in history, infecting enterprise, home users and governments in more than 200 countries.
    2010, FakePlayer, SMS Trojan on Android.
    2010, Stuxnet, targeted attacks on SCADA systems [Supervisory Control and Data Acquisition], to mark the advent of the era of cyber war
    2011, Duqu, sophisticated Trojan that gathers intelligence on the target
    2012, Flame, highly sophisticated malicious program that is actively used as a weapon to attack cyber entities in some countries.

Kaspersky Lab was founded under the leadership of Eugene Kaspersky and co-founder. Starting from just 20 employees in 1997, Kaspersky Lab developed into the world's largest private security firms, with more than 2,400 employees in about 200 countries around the world.
Kaspersky Lab develops secure content and threat management solutions, providing IT security for more than 300 million users worldwide, including more than 200,000 companies.
With his team's level of expertise, Kaspersky Lab claims to have recently uncovered some of the most complex malware ever existed in the world, such as Cabir, Duqu, and, most famously, malware Flame.
"Fifteen years is a long time to be in the same business. Yet, believe it or not, I still love it. I love this team and I love my job."
"In the last 15 years we worked around the clock every day, analyze and deal with all types of IT threats that have evolved in that time span ranging from cyber hooliganism, cyber criminals, to the cyber war.
"The important thing now is to work together to face the threat of digital. Recent attacks like Stuxnet, Duqu, and have shown how fragile the Flame IT infrastructure against military and terrorist threats."
"However, we do everything we order to prevent potential damage that can occur as a result of this attack," said Eugene Kaspersky, CEO and co-founder of Kaspersky Lab