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Which malware appears to be useful software but hides a malicious function?

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  1. Worm
  2. Trojan
  3. Boot sector virus

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References

  1. Trojan horse, NIST CSRC glossary csrc.nist.gov/glossary/term/trojan_horse Checked 2026-10-10.
  2. Ransomware, NIST Small Business Cybersecurity Corner www.nist.gov/itl/smallbusinesscyber/guidance-topic/ransomware Checked 2026-10-10.

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Security & PrivacyWhich type of malware is designed to hide itself and keep stealthy access to a host?Security & PrivacyWhich Windows feature encrypts an entire drive volume to protect data on lost or stolen devices?Security & PrivacyWhich feature encrypts removable drives such as USB flash drives in Windows?

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