Possible Clues:

• Malicious 'gift'
• Subversive element working for the opposition
• Destructive software
• Historic ''gift'' delivered to ancient Turkey
• Malevolent infiltrator
• Hector, perhaps, and mount threat to computer
• *Mythological trick
• Type of computer program produced by hard worker out of spite, ultimately
• Fatal Greek gift
• Damaging program the Greeks aggressively piled out of