1. Virus/Trojan/worm/logic bomb: 11,001, 10.2 percent.

2. Another name for a logic bomb.

3. A disgruntled employee planted a logic bomb.

4. Computer viruses act like biologics in the way they can be set off: they can be virulent from the outset of the infection or they can be activated by a specific event (logic bomb).

5. "Malicious code through multiple means (e.g., phishing, virus, logic bomb) continues to be the most widely used attack approach," the report states.