SESK: Stuff Everyone Should Know · sesk.info/aplus-trojan-hidden
Which malware appears to be useful software but hides a malicious function?
Trojan.
- Worm
- Trojan ✔
- Boot sector virus
Why: A Trojan looks like a helpful program but contains hidden malicious code. It tricks users into running it.
Huh, didn't know that: Trojans can evade security mechanisms by exploiting legitimate authorizations of the user running them.
Never accept free downloads from strangers, especially if they are horses.
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References
Answer: Trojan. A Trojan looks like a helpful program but contains hidden malicious code. It tricks users into running it.
- Trojan horse, NIST CSRC glossary csrc.nist.gov/glossary/term/trojan_horse
A computer program that appears to have a useful function, but also has a hidden and potentially malicious function
Checked 2026-10-10. - Ransomware, NIST Small Business Cybersecurity Corner www.nist.gov/itl/smallbusinesscyber/guidance-topic/ransomware
Ransomware is a type of malicious attack where attackers encrypt an organization's data and demand payment to restore access.
Checked 2026-10-10.
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More stuff everyone should know
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That's stuff everyone should know.