cryptolocker

CryptoLocker is a type of malware known as ransomware that emerged as a significant cyber threat in the mid-2010s. This malicious software infiltrates systems through suspicious downloads, emails, or infected websites, often unbeknownst to the user. Once inside, it encrypts the system's files and demands a ransom for their release. CryptoLocker was particularly notorious for its widespread impact, targeting both individuals and larger businesses worldwide. It spread fear through massive attacks and theft of thousands of confidential files. The ransom demanded by CryptoLocker was typically 2 bitcoin, a substantial sum given the cryptocurrency's value. Despite Trojans being the most common security threat at the time, CryptoLocker stood out due to its devastating effects and persistence. It was a main protagonist of cyberattacks throughout the year, even causing three different infections within an organization that had its antivirus fully updated. Its copycat, CryptoWall, while not as well-known, was dubbed "the largest and most destructive ransomware threat on the internet" by Dell Secureworks Counter Threat Unit in August 2014. In its first six months, CryptoWall infected 635,000 systems and earned over $1.1 million in ransom payments. In response to the CryptoLocker threat, Operation Tovar was launched, an international alliance consisting of law enforcement agencies, security firms, and researchers. This coalition aimed to combat the Gameover ZeuS botnet and the CryptoLocker ransomware, two major cybersecurity threats. Additionally, tools were developed to decrypt files encrypted by CryptoLocker, offering victims a potential way to recover their data without paying the ransom. Despite these efforts, CryptoLocker remains a symbol of the persistent threat posed by ransomware.