It caused losses of about $20 million to $80 million worldwide.
2. Melissa (1999) is a macro virus that spreads very fast. It is spread as an email attachment. Melissa virus will not destroy files or other resources, but it may stop the operation of enterprises or other mail server programs, because it sends out a large number of mails and forms a huge e-mail information flow.
1999 broke out on March 26th, infecting 15%-20% of commercial computers, resulting in a loss of $30 million to $60 million.
3. "Love You" (2000) is spread by e-mail just like Melissa, but it is much more destructive than Melissa. It can delete some local pictures and words, resulting in a loss of about10 to15 million dollars.
4. Red Team (200 1) is a worm virus, which spreads through the server's port 80 by using buffer overflow attack in essence. Port 80 is the channel for information exchange between the Web server and the browser.
Unlike other viruses, Code Red does not write virus information into the hard disk of the attacked server, but only resides in the memory of the attacked server.
It caused a loss of about $2.8 million worldwide.
5.SQL Slammer (2003) is a DDOS malicious program. It infects the server by using distributed denial of service attack through a brand-new infection way. It takes advantage of the weakness of SQL Server, attacks 1434 port and infects the SQL Server in memory, and then spreads a large number of denial-of-service attacks and infections through the infected SQL Server, resulting in the failure or downtime of the SQL Server and the internal network congestion.
Like Code Red, it only exists in the memory of the attacked server, causing about 500,000 servers in the world to crash and the whole network in Korea to be paralyzed 12 hours.
6.Blaster, 2003) Shock wave virus is spread by using the RPC vulnerability published by Microsoft on July 2 1 that year. As long as there is RPC service on the computer and there is no security patch, the virus will infect the system, resulting in the following phenomena: the system resources are heavily occupied, and sometimes the RPC service termination dialog box pops up, and the system restarts repeatedly, resulting in the inability to send and receive mail, the file can not be copied normally, the webpage can not be browsed normally, the copy and paste operation is seriously affected, and the DNS and IIS services are illegally rejected. This virus should be a familiar virus that has a wide influence in China recently.
It caused a loss of about $2 million to10 million, but in fact thousands of computers were affected.
7. Big commitment. F (Sobig。 F, 2003) This is the fifth variant of Sobig worm, which has very strong infection ability, so it will cause huge mail transmission, which will lead to the collapse of mail servers all over the world, and because of its characteristics, it will also reveal local data extremely dangerously.
It caused a loss of about $5 million to10 million, and more than10 million computers were infected.
8.Bagle, 2004) Bagle, also known as Beagle, is a worm spread by email. It accesses the website remotely, spreads through the e-mail system, and establishes the back door in the Windows system. So far, this worm is probably the most serious and widespread worm, and its influence is still rising.
At present, it has caused tens of millions of dollars in losses, and it is still continuing.
9.MyDoom (2004) This virus is a combination of virus and spam, which can spread rapidly in the enterprise e-mail system, resulting in a sharp increase in the number of emails, thus blocking the network.
Either virus or spam has caused enough troubles to users last year, but now the combination of the two is more fierce, and most users don't know about it, which makes the spread speed of this virus break through the original spread speed of various viruses.
According to the data of MessageLabs research company, at the peak of MyDoom virus outbreak, one in every 10 mail was infected by this virus, and one in every 17 mail was infected by Sobig virus which was rampant in the previous year.
At the worst of its outbreak, the global network speed dropped sharply.
10.Shockwave (Sasser, 2004) the shockwave virus will automatically search for computers with loopholes in the system on the network and directly guide these computers to download virus files and execute them, so there is no need for human intervention in the whole spread and attack process.
As long as these users' computers are not patched and connected to the internet, they may be infected.
This kind of attack is very similar to the shock wave of that year, which will crash the system files and cause the computer to restart repeatedly.
At present, it has caused tens of millions of dollars in losses.
CIH virus history:
CIH belongs to malignant viruses. When its attack conditions are ripe, it will destroy the hard disk data and possibly the BIOS program.
1June 2, 998: the first case of CIH virus was found in Taiwan Province province, China.
1June 6, 998: the first sample of CIH virus arrived at DF anti-virus laboratory.
1June 6, 998: The CIH virus version 1.2 was released and tracked by the FSAV anti-virus agency.
1June, 99812nd: CIH virus version 1.3 was released and tracked by FSAV anti-virus organization.
1June 26, 998: CIH virus version 1.3 first attacked, but the harm was less.
1June 30th, 998: CIH virus version 1.4 was released and tracked by FSAV anti-virus agency.
June 65438+July 0998: CIH virus spreads on the Internet through infected pirated software.
1August, 998: The trial version of the game software "Flying Captain" was infected by CIH virus.
1August, 998: Two European game magazines send CDs infected with CIH virus.
1August 26th, 998: The version of CIH virus 1.4 broke out, which attracted wide media attention.
1September 1998: Yamaha Company issued the first batch of CD-ROM software infected with CIH virus.
1998 10: The widely circulated trial version of SiN game software was infected by CIH.
1March, 999: version of CIH virus 1.2 invaded IBM's Aptiva computer.
1On April 26th, 999, the version of CIH virus 1.2 broke out for the first time, and the computer industry suffered huge losses.