Most dangerous computer threats for the past 20 years

PandaLabs laboratory published rating of the most dangerous computer threats for the past 20 years, said TechNews.bg rankings released on the occasion of 20-year anniversary of the security company Panda Security. All threats in the ranking are selected according to their degree of popularity as a result of widespread epidemics are caused by them over the period, the company stated. Friday, the 13th or Jerusalem. Established in Israel in 1988 (still there even before the company Panda Security) and noticed for the first time in Jerusalem, the virus is most likely associated with the celebration of 40 anniversary of Israel. Of course, started its operation on the date Friday 13th, wipe all the programs installed on infected computers. Barrotes. This is the first known Spanish virus appeared in 1993, once uploaded to your computer, it remains hidden until the date 5 January, when activated, showing a series of features looking like a grid on the monitor. Cascade or Falling Letters. Established in Germany in 1997, this virus represents a screen waterfall falling letters each time an infected computer. CIH, also known as Chernobyl. The virus is established in Taiwan in 1998 and only for one week was able to infect thousands of computers. Melissa. Appears for the first time on 26 March in the United States. This virus is distributed using the type of messages: „This is the document you asked … do not show anyone else. Its action consists in blocking some options in Microsoft Word and change the document used. ILoveYou or Loveletter. So famous that it hardly needs no introduction, this „romantic“ virus out of the Philippines in 2000 with his title „I LOVE YOU“, he easily draws attention to itself and thus infect millions of computers worldwide, even organizations such as the Pentagon. Klez. Established in 2001 in Germany, the worm has infected computers every 13th day of odd months. Nimda. The name is actually the word „admin“ (administrator), written backwards. The relationship is expressed in the possibility of this type of worm to establish administrator rights already infected computers. Nimda was established in China on 18 September 2001. SQLSlammer. This is another type of worm which caused a lot of headaches for many companies throughout the world. Appeared for the first time on January 25, 2003, the worm affects more than half a million servers a few days. Blaster. Worms established in the U.S. on August 11, 2003 and known for the strange content in your code, namely „I just want to say I love you, son!“ (Still not known whose son becomes a question) as and „Billy Gates, why make this possible? Stop making money and fix your software. Sobig. German virus that appeared in the summer of 2003 of options under which they spread throughout the network, the most dangerous is Sobig.F, which launched the attack on 19 August, using electronic mail and involving a total of 1 million computers. Bagle. Appeared on January 18, 2004 and is one of many worms with many options. Netsky. This malicious code is launched by Germany in 2004, exploits a vulnerability in Internet Explorer. Its creator is actually responsible for other known virus – Sasser. Conficker. Last on the list but not in significance of the harm that causes, Conficker appeared in November 2008 odd thing is that if attacked the keyboard of the computer is configured to write in Ukrainian, the computer will not be affected.