London-based Travelex revealed that after being attacked by ransomware on January 11, it paid hackers nearly $ 2.3 million in Bitcoin (BTC). Travelex confirmed the attack to the media shortly after the incident. However, they did not disclose that a ransom of about 285 BTC was paid after the system went offline for several weeks. The attack, called Sodinokibi (or "REvil"), is a malware attack that began leaking stolen data from multiple companies such as CDH Investments and the aforementioned London company earlier this year. According to a report on January 8, Travelex was infected with ransomware, and hackers demanded $ 6 million worth of Bitcoin.