wiretap

noun 0.871

eavesdropping

noun 0.677

lawful interception

noun 0.611

eavesdrop

noun 0.600

videotaping

noun 0.590

spy ring

noun 0.587

tapping

noun 0.586

eavesdropper

noun 0.573

tape recording

noun 0.572

wire

noun 0.551

wireless telegraphy

noun 0.548

mass surveillance

noun 0.547

surveillance

noun 0.546

wire netting

noun 0.541

snooping

noun 0.541

video surveillance

noun 0.536

wire copy

noun 0.535

hacking

noun 0.529

telegraphy

noun 0.529

waterboarding

noun 0.523

wireless

noun 0.522

wireless telephony

noun 0.521

tap

noun 0.519

wiring

noun 0.518

telegraphing

noun 0.517

spyware

noun 0.517

telegraph

noun 0.515

countersurveillance

noun 0.514

radiotracking

noun 0.511

tripwire

noun 0.509

surveillance camera

noun 0.505

industrial espionage

noun 0.505

audiotape

noun 0.504

overhearing

noun 0.503

monitoring

noun 0.502

interrogation

noun 0.502

telephone

noun 0.500