In return, the victim is forced to pay a ransom via Bitcoin to decrypt their data. Once infected, WannaCry encrypts files on the PC’s hard drive, denying access to any data on the system. Hackers allegedly used EternalBlue, a National Investigation Agency (NSA) exploit for older Windows systems stolen in 2016 and leaked by The Shadow Broker group to carry out the attack.Īlso Read: What Is Ransomware and How Can You Remove It?

With an estimated 0.2 million victims and 0.3+ million infected computers, it was particularly controversial for its propagation.

Rootkits-A covert computer program to give hackers remote access to a victim’s computer without being detected.

Keyloggers-A potent tool to steal user information by recording keystrokes on victims’ computer.

Worms-Computer worm malware usually spreads copies of itself from computer to computer, often via email contacts of the victims.

Trojans-Malware software often disguised as a legitimate tool designed to gain access to user data.

Spyware-Covertly gathers personal and sensitive information about a person or organization.

Ransomware-Encryption based malware that disables access to user data with a demand for ransom.Adware-Advertisement-supported software serving unwanted and often malicious ads without user consent.Here are the common types you are most likely to encounter. Hackers use 11 common types of malware attacks for the purpose of data theft and other illegal activities. So what are the most notorious malware attacks that changed the way we use and know computers? What Are the Common Types of Malware Attacks?

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