In 2013, cybersecurity firm Mandiant published a blockbuster report on a state-sponsored hacking team known as APT1, or Comment Crew. The Chinese group achieved instant infamy, tied to the successful hacks of more than 100 US companies and the exfiltration of hundreds of terabytes of data. They also vanished in the wake of being exposed. Now, years later, researchers from security firm McAfee say they\u2019ve found code based on APT1\u2013associated malware cropping up in a new set of attacks.