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Starting as early as 1989 with the first documented ransomware known as the AIDS trojan, the use of ransomware scams grew internationally. [ 7 ] [ 8 ] [ 9 ] There were 181.5 million ransomware attacks worldwide in the first six months of 2018, 229% more than the first six months of 2017. [ 10 ]
The WannaCry ransomware attack was a worldwide cyberattack in May 2017 by the WannaCry ransomware cryptoworm, which targeted computers running the Microsoft Windows operating system by encrypting data and demanding ransom payments in the Bitcoin cryptocurrency. [4]
CryptoLocker typically propagated as an attachment to a seemingly innocuous email message, which appears to have been sent by a legitimate company. [5] A ZIP file attached to an email message contains an executable file with the filename and the icon disguised as a PDF file, taking advantage of Windows' default behaviour of hiding the extension from file names to disguise the real .EXE extension.
LockBit is a cybercriminal group proposing ransomware as a service (RaaS). Software developed by the group (also called ransomware) enables malicious actors who are willing to pay for using it to carry out attacks in two tactics where they not only encrypt the victim's data and demand payment of a ransom, but also threaten to leak it publicly if their demands are not met.
Rhysida is a ransomware group that encrypts data on victims' computer systems and threatens to make it publicly available unless a ransom is paid. [1] The group uses eponymous ransomware-as-a-service techniques, targets large organisations rather than making random attacks on individuals, and demands large sums of money to restore data.
A security hacker or security researcher is someone who explores methods for breaching defenses and exploiting weaknesses in a computer system or network. [1] Hackers may be motivated by a multitude of reasons, such as profit, protest, information gathering, [2] challenge, recreation, [3] or evaluation of a system weaknesses to assist in formulating defenses against potential hackers.
Cryptovirology refers to the study of cryptography use in malware, such as ransomware and asymmetric backdoors. [citation needed] Traditionally, cryptography and its applications are defensive in nature, and provide privacy, authentication, and security to users. Cryptovirology employs a twist on cryptography, showing that it can also be used ...
The Cyber Division (CyD) is a Federal Bureau of Investigation division which heads the national effort to investigate and prosecute internet crimes, including "cyber based terrorism, espionage, computer intrusions, and major cyber fraud." This division of the FBI uses the information it gathers during investigation to inform the public of ...