Top 7 Most Dangerous Computer Viruses
Computer viruses can do a lot of damage and are very destructive. You are special to be able to imagine how large organizations, governments, schools, businesses and even the IT sector are affected and are so inconvenienced when certain viruses threaten and attack their systems.
In addition, computer viruses also create many problems in an organization. Organizations that should be able to carry out an active operation every day could be hampered by an attack from a virus. Here are 7 of the most dangerous computer viruses in the world.
1. SQL Slammer
Appeared in January 2003, spreading rapidly over the internet. This did quite a lot of damage. Include this virus, namely a web server running a version of Microsoft SQL Server. After infecting the server, the virus generates a random IP address.
2. Bagle
Bagle virus was detected in 2004, usually this virus carries out boils to users via email attachments, and is also used to share (spam) the email itself. Bagle doesn't rely on the MS Outlook contact list to create a list on which to send itself.
The danger of this virus is that the design opens a backdoor through which remote users can gain access and control from infected computers. It is capable of downloading supplementary components for both services and stealing user info or launching DDoS attacks to specific sites and computers.
3. Melissa
Melissa virus, which was formed in 1999 by David L. Smith, was formed with basic activities, exactly like Microsoft Word macros. The Melissa virus is a mass-mail malware that is said to have infected up to 20 percent of computers worldwide.
This virus spreads by email with documents. When this file is opened or clicked, it will automatically run virus replication and automatically send bait to the top 50 in the address book from email. Email servers around the world were forced to shut down to prevent the virus from spreading, as well as to remove the virus from the system. Dan Smith was jailed for 20 months and fined $ 5,000 and stopped accessing computers without supervision.
4. Sasser
The creator of this virus is an adult aged 17 years from Germany, who was nicknamed Sven Jaschan in 2004. Sasser attacked Microsoft Windows. Sasser doesn't spread via email. This virus usually spreads through Jakarta.
Infect computers by exploiting vulnerabilities present in Windows 2000 and Windows XP, known as RPC exploits (Remote Procedure Call). This will make the computer virus unable to shutdown without removing power. Jaschan was finally caught but he was not imprisoned, especially to be given a probation period of 1 year and 9 months, because at that time he was under the age of 18.
5. MyDome
MyDome virus which was detected in 2004. This virus creates a backdoor in the OS. Computers were first identified in the first February attacks by implementing DDoS. It was then reported to have returned to attack on 12 Feb, after which the virus stopped spreading and started creating backdoors.
MyDoom spreads via email. MyDoom slows down global internet access by ten percent, and causes multiple websites to be reduced by 50%.
6. Leap-A / Oompa- A
Macs have a concept of security through obscurity, Mac believes thea system cannot be infected by viruses that cause the OS system to be closed. But in 2006, the Leap-A virus or commonly known as Oompa-A appeared and spread via iChat on Mac.
Having a Mac attack, the virus will search for contacts via iChat and send messages to each contact. This message will include any corrupt JPEG files. This is not dangerous, but it is a sign that the Mac OS system is not immune to this virus.
7. Code Red
The world has not yet recovered from the damage caused by the ILOVEYOU virus when Code Red was released in 2001. This virus is specifically for attacking Windows 2000 & NT OS. This virus will make the buffer full so that the memory becomes full.
After the computer has been compromised by a virus, it will display the message "Welcome to http://www.worm.com! Hacked by Chinese!" Then, it will look for other computers running web server software and do the same thing.
After about two weeks of infection, the virus was programmed to initiate DDoS (Distributed Denial of Service) attacks on certain websites, including servers from the White House.
So, those are the seven most dangerous viruses in the world to date. Immediately conducive your computer device with internationally trusted Antivirus and update it regularly. Thank you.