Free Rhysida ransomware decryptor for Windows exploits RNG flaw

**Rhysida ransomware encryption flaw disclosed — free Windows decryptor available.** South Korean researchers and KISA published a technical paper and a Windows decryptor after finding that Rhysida's CSPRNG seed is time-derived and guessable, allowing recovery of the encryption key/IV to decrypt intermittently-encrypted file segments; the flaw had been privately used by responders since mid-2023 but is now public, though the decryptor only applies to the Windows encryptor (not ESXi or PowerShell variants).