Cyberspy Unit News Today

Embarrassing emails and personal information about celebrities and studio execs federal officials say had become a threat to national security. the group claiming responsibility for the hack, the guardians of peace, warning theaters and moviegoers, if your house is nearby, youd better leave. >> they use very sophisticated malware, new tactics and techniques we havent often seen. >> reporter: abc news learned federal investigators determined north korea is responsible for the worst corporate cybe...