Related Clues:

• Invasive computer software
• Apple worms, say
• Desktop viruses, e.g
• Sharp tool twisted into horse for Trojan's delivery?
• Sneaky programs
• Dangerous downloads
• Macho guards fighting source of cyber invasion?
• Online viruses and such
• Knock back some of the raw lamb -- it could damage your system
• Dangerous apps
• Alarm, we fancy, finding bad program
• He must keep fighting harmful programs
• Computer worm, e.g
• Chap defending conflict, the bane of office workers?
• Risk of spreading spam