Abyss Ransomware Group Abyss Locker (also known as abyss locker ransomware , abyss locker group , or abysslocker ) is a sophisticated double-extortion ransomware operation that first emerged in 2023. It encrypts victim files, exfiltrates sensitive abyss locker data , and threatens to publish abyss locker victims information and abyss locker stolen data on abyss locker dark web leak sites if ransoms are not paid. The group excels at targeting critical infrastructure, levera