What is Trojan Malware?
A Trojan is malware disguised as legitimate software. Learn how Trojans work, how to detect them, and how to protect yourself.
AI Answer
A Trojan is malware disguised as legitimate software. Unlike a virus it does not self-replicate, but it can open backdoors, steal data, or install additional malware.
Definition
A Trojan (Trojan horse) is malicious software that disguises itself as a legitimate program to trick users into installing it, after which it can open backdoors or steal data.
Overview
A Trojan is malicious software disguised as a legitimate program. The name comes from the Greek story of the Trojan horse.
How it works
- Executes under a trusted appearance.
- May open a backdoor for remote control.
- May download and install additional malware.
- Often used to steal credentials and data.
Key difference from a virus
A Trojan does not self-replicate; it requires a user to install or execute it. A virus can spread on its own.
Detection & defense
- Use reputable antivirus/EDR and keep definitions updated.
- Verify file hashes before installation (see the Hash Checker tool).
- Download software only from official sources.
- Be cautious with attachments and cracked software.
- Run regular scans and monitor for unexpected processes or outbound connections.