Do Son A Babuk successor, Midnight ransomware, contains a critical flaw in its RSA key handling. Gen researchers created a free decryptor that bypasses the encryption, allowing victims to recover files.
File Recovery
ASEC exposed a flaw in Gunra Linux ransomware: its ChaCha20 keys are generated using an insecure time()/rand() seed, potentially allowing victims to brute-force decryption and recover files.