spyware
US /ˈspaɪ.wer/
UK /ˈspaɪ.wer/

1.
spyware, software espião
software that enables a user to obtain covert information about another's computer activities by transmitting data covertly from their hard drive.
:
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Always install antivirus software to protect against spyware.
Sempre instale software antivírus para proteger contra spyware.
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The company's network was compromised by a sophisticated spyware attack.
A rede da empresa foi comprometida por um sofisticado ataque de spyware.