New Black Basta decryptor exploits ransomware flaw to recover files encrypted between November 2022 earlier this month

Security Research Labs published a 'Black Basta Buster' decryptor that leverages a weakness in the Black Basta ransomware's ChaCha-based encryption to recover files for victims infected from November 2022 up to shortly before the patch; Black Basta developers fixed the encryption bug about a week ago, which prevents this technique from working against newer attacks.