Over winter break in December 2023, Tam Nguyen got a call from an unexpected source – the Department of Homeland Security.
As the chief technology officer for Orange Unified School District in California, Nguyen was understandably skeptical. But the man provided details that verified he was phoning about a computer owned by the school district. And that computer used by a student at home was interacting on the dark web with a command-and-control network, a system used by malicious hackers to communicate with and control compromised devices.