trojan
Definitions
A person or thing that is deceptive or treacherous, often used to infiltrate or undermine from within.
A malicious computer program that misleads users of its true intent to gain unauthorized access to a system.
Examples
The cybersecurity team discovered a hidden trojan that was stealing sensitive user data.
The company's firewall failed to block the malicious trojan disguised as a legitimate software update.
He accidentally installed a trojan on his computer after clicking a suspicious link in an email.
Synonyms
deceptive subversive insidious treacherous hidden infiltrating covert