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logic bomb

logic bomb

7.9
Hidden code in a program that does harm when triggered
  • noun
  • /ˈlɒdʒɪk bɑm/
  • Specialized
translation icon : bomba lógica
  • During the security audit, they discovered a logic bomb designed to activate when users accessed sensitive information.

Examples

  • I dropped a logic bomb through the trap door.

  • There is a logic bomb in the enhancement programme.

  • Mr. Jones testified for over five days about how Mr. Duronio, a disgruntled employee, planted a logic bomb within UBS's network to render critical trading servers unusable.

    Blog text (11)
  • The hacker planted a logic bomb in the system to trigger data loss on a specific date.

  • Investigators found evidence that a logic bomb was embedded in the software update.

How Dangerous

ransomware
  • Specialized
8 7.9
logic bomb
  • Specialized
7.9
worm
  • Specialized
26 7.4
trojan
  • Texting
8.2
virus
  • Specialized
137 3.3
spyware
  • Specialized
21 4.8
adware
  • Specialized
2 4.4

Surface Forms

logic bomb singular
logic bombs plural

Morphology

logic + bomb

The constituents 'logic' (program rules) and 'bomb' (an explosive, here used metaphorically) cue a destructive or triggering element within program logic, so a B1 learner who knows both words could infer it's something in software that causes harm. However, the specific sense — a secretly inserted piece of code that activates under certain conditions — is technical and not fully predictable from the parts alone, so prior exposure or domain knowledge is needed.

Etymology

The term logic bomb comes from the image of a bomb that waits for the right logic or condition and then explodes. That's why it now means 'hidden code' that stays quiet until a 'set condition' happens and then runs to cause harm.