Top 7 world's most dangerous computer viruses.

Computer viruses name because they act like viruses and Replicate they infect lots of files on a machine and can be spread to another machine by doing things sending files to someone else Or using an infected USB Drive on the computer.

The worms adware Trojans and rootkits which are hard to detect and can give attackers control of the machine Perhaps even more frightening are ransomware attacks.

Some cases sensitive data and makes payment to get it backfiles.

The world's most dangerous computer viruses :

v SQL slammer/sapphire.

v Melissa.

v Sir Cam.

v Code Red.

v I love you.

v Sobig (Sobig. F).

v Conficker.

1. SQL slammer/sapphire.

·    In 2003 USA  continental airlines' electronic ticketing and blocked 27 million people from the internet. Even Seattle's 911 services were affected as Wired explains slammer used an attack on one type of software then infected machines would spread this worm through the net.

·    It was stopped eventually by patches and antivirus software the creator of this virus is still unknown It also reappeared briefly in 2016 from IP addresses coming from China, the USA, Venezuela, Argentina Ukraine, Mexico, Vietnam, Thailand, and Russia.

2. Melissa.

·    It is an infected Word document posted on a Usenet group if that was opened It would send to 50 people on someone's Microsoft Outlook email program it created mayhem when emails were being sent at a rate that messed with companies and big corporations.

·    In 1999 Microsoft shut down incoming email Users would get a message is that document there was an attachment with it according to one source It cost people governments and companies in all about 1.2 billion dollars.

3. Sir Cam  

·    The nasty worm also made Microsoft Windows systems its target again it spread far and wide as it sent itself to people in your email address book not always saw the following message.

·    Choosing random files from your computer and sending them to others This was particularly bad for governments don't want random files being sent out.

·    It said it affected 12% of computers in North America and 11% of computers in Europe.

 

4. Code Red

·    The worm estimates on the damage caused by Code Red range in the billions of Webpages that were affected suddenly Hello! Welcome to  www.worm.com  Hacked By Chinese.

·    HTTP requests exploit buffer overflow vulnerability Which allows the worm to run on your computer

·    The malicious code is not saved as a file is inserted into and then run directly from memory. It has been called one of the most sophisticated attacks ever that are almost down the internet infecting.

·    Microsoft Internet Information server Which many websites run on it was what is called a distributed denial-of-service attack Which means overwhelming websites with more traffic which brings them down.

 

5. I love you

·    Virus a bit other things it comes as an email with The words I love you in the subject.

·    It spread fast to open the attachment once they did that else in that address book.The same email did spread quickly it also deleted many of the files including every JPEG and mp3 it reached 45 million people in one day in the 2000s.

·    It was a little  Melissa, it sent mail to all your contacts and deleted personal files. Even the  British Parliament shut down their emails and  Pentagon, CIA

·    The virus has eventually linked the programmers in the Philippines.

6. Sobig (Sobig. F)

·    In 2003 and included a worm and a Trojan horse all in get an email with any number of subject lines Re wicked screensaver or re-approved and then there would be an attachment.

·    Sobig. F breaks virus speed records It was said at the time to be the fastest-growing virus ever it stopped Airlines from operating slowed down many major corporations and worried the government it mostly affected the USA.

·    It is spreading at a very fast rate and the volumes are high in the USA 40 million emails were scanned and half of them contained the virus.

7. Conficker

·    Conficker is to be the most destructive worm.

·    It was discovered in 2008 and has lifetime infected as many as fifteen million computers. It affected police departments in the UK and the military with their operations.

·    It infects Windows operating systems and it lasted a long time as it kept getting past patches and antivirus software.

·    It's a mystery to security experts they know it takes over a machine and then infects other machines.