Trojan horses are very harmful. They may leak the victim's sensitive information and even remotely control the victim's host. Which of the following are the ways in which Trojan horse programs…

Question

Options

• AThe attacker exploits the vulnerability to invade the host and then installs a Trojan horse program
• BDisguise it as a tool program and trick users into running it. Once run, the Trojan will be
• CThird-party downloaders download software that carries Trojans
• DBundled in a well-known tool program

• A
  100% (31)

Explanation

All four options (A, B, C, D) are correct because Trojans spread through multiple vectors simultaneously - there is no single "wrong" distractor in this question, making it a "select all that apply" scenario. Option A is correct because attackers actively exploit software vulnerabilities (unpatched OS, services) to gain access and silently plant Trojans without any user interaction. Option B is correct because social engineering is a primary Trojan delivery method - users willingly execute malicious files disguised as games, cracks, or utilities. Option C is correct because compromised or unverified third-party download sites (not official sources) frequently bundle Trojans inside installers. Option D is correct because even trusted, well-known software can be tampered with - either through supply chain attacks or unofficial re-packaged versions - to carry a hidden Trojan payload.

Memory tip: Use the acronym VEST - Vulnerability exploitation, Execution via social engineering, Source (third-party downloaders), Tampering (bundled in known tools) - to recall all four Trojan spreading methods on exam day.

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