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Last-Minute Virus Cleanup
- Paul Ducklin raced to help a company disinfect computers before the CIH logic bomb's trigger date.
- He and a colleague cleaned systems after hours to try to stop an imminent worldwide detonation.
Stealth Hiding Makes Logic Bombs Deadly
- CIH used code-caving to hide inside executables so file sizes didn't change and infections stayed nearly invisible.
- Stealthy hiding makes logic bombs effective because they rely on remaining undetected until detonation.
BIOS-Wiping Catastrophe
- On April 26, 1999 CIH wiped partition tables and overwrote BIOS firmware, leaving many PCs unbootable.
- The attack caused widespread panic and roughly a billion dollars in damage, especially in Asia.


