Did TeslaCrypt kill its ransomware so it could launch a new product?

GUEST: Last week saw an unusual development in the field of ransomware: The cybercriminal group that operates the TeslaCrypt malware published a universal decryption key for their software. Any victim can download and use it - and repair files encrypted by TeslaCrypt - so this threat is technically disarmed. This malware appeared about a year ago. […]