BianLian is a cybercriminal ransomware group, presumably based in Russia, which has targeted Critical National Infrastructure (CNI) in the US and private enterprises in Australia and the UK since June 2022, [1] [2] [3] [4] specializing since 2023 in encryption-based extortion. [5] [3] (It had previously used the more labor-intensive double-extortion model.) Valid Remote Desktop Protocol credentials are used to gain access to systems. [6] [3] On 20 November 2024, FBI, United States’ Cyber Security and Infrastructure Security Agency (CISA) and the Australian Cyber Security Centre (ACSC) released a joint security advisory concerning the BianLian group. [6] [3] Such has been its noterierty that on 6 March 2025 the FBI and its Internet Crime Complaint Center (IC3) issued an advisory bulletin about unknown actors claiming to be BianLian. [7]