Former Employee’s Malware Meltdown: Costly Sabotage Lands Him in Prison
Davis Lu, a software developer with a flair for malicious creativity, turned his technical prowess against his own employer. Using custom malware and a cheeky kill switch named ‘IsDLEnabledinAD,’ he wreaked havoc on company networks, causing massive losses and locking out employees. His antics earned him a four-year prison sentence.

Hot Take:
When life’s corporate ladder doesn’t lead to the corner office, some people take “career sabotage” a bit too literally. Meet Davis Lu, the 55-year-old tech whiz who turned his employer’s network into his personal game of Minesweeper. His career advice? Don’t burn bridges—especially not with a malware firestorm.
Key Points:
- Davis Lu, a 55-year-old software developer, sentenced to four years in prison for sabotaging his former employer’s network.
- He deployed custom malware and a kill switch that locked out employees when his account was disabled.
- The damage caused by Lu’s actions resulted in hundreds of thousands of dollars in losses for the company.
- Lu’s malicious code included infinite loops, deleted user profiles, and server lockouts.
- The case highlights the critical need for early detection of insider threats in organizations.
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