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Coinciding with the celebration of 20 anniversary of Panda Security PandaLabs experts have developed the ranking of those considered most dangerous threats of the past 20 years, both for end users and for companies, and they have "face".

Different threats have been selected by the popularity they have achieved to have been involved in major epidemics. The gallery is famous:

- Friday 13 or Jerusalem. Created in Israel in 1988 (even before the founding of Panda), allegedly commemorating the fortieth anniversary of the Jewish State in the city of Jerusalem. When agreed on the schedule Friday and 13, all trying to run programs on your computer is erased.

- Balusters. The Spanish first known virus, which appeared in 1993. Once on the PC, remained hidden until January 5, the date on which activated leaving only bars on the monitor.

- Cascade or Falling Letters. Born in Germany in 1997. When a PC is infected, had dropped the letters on the screen as if it were a waterfall.

- CIH or Chernobyl. Born in June 1998 in Taiwan, and only took a week to spread and infect thousands of computers.

- Melissa. This woman named virus made its appearance on March 26, 1999 in the United States. The very pussy already using social engineering techniques, and that came with the message "Here is that document you asked for ... do not show it to anyone ".

- ILoveYou or Loveletter. So popular that almost goes without submission. The virus appeared loving in 2000 from the Philippines. It came with the matter ILoveYou and was able to infect millions of computers and important institutions like the Pentagon.

- Klez. Came in 2001 from Germany, and only infected on 13 odd months.

- Nimda. The name comes from admin, to the order of the letters changed, and I was able to create administrator privileges on the affected computer. Born in China on September 18, 2001.

- SQLSlammer. He was also a real headache for companies. He was born on January 25, 2003, and peaked at over half a million servers in a matter of days.

- Blaster. From United States, August 11, 2003 this virus, which contained a message in your code: "I just want to say that I love san!" (Still do not know who would be St. , Adding "Billy Gates why do possible? Stop making money and fix your software ".

- Sobig. He was famous during the summer of 2003, came from Germany. The F variant was the most damaging attack on 19 August of that year and generating over a million copies of itself.

- Bagle. Appeared on January 18, 2004, and has been one of the most prolific in terms of number of different variants.

- Netsky. This worm was born in Germany in 2004 and took advantage of vulnerabilities in Internet Explorer. Its creator was also the father of another virus famous Sasser.

- Conficker. The last and most recent, published in November 2008. As a curiosity, if you had the keyboard set in Ukrainian, not affecting you ...

More information http://www.pandasecurity.com/spain/20aniversario .