WannaCry Ransomware: Tools Decrypt for Free

Good news for many victims of WannaCry: Free tools can be used to decrypt some PCs that were forcibly encrypted by the ransomware, providing the prime numbers used to build the crypto keys remain in Windows memory and have not yet been overwritten. The decryption tools carry several caveats: Affected systems must not have been powered down or rebooted. Users must also have admin-level access to the infected system. And even then, security researchers caution, the tools still might not...