A virus is a type of malware that can replicate itself and spread from one device or file to another by attaching to programs, documents, or system files. Viruses can damage data, slow down systems, corrupt files, or allow unauthorized access to devices.
Unlike some other malware types, viruses usually require user action, such as opening an infected file or application, to activate and spread.
For example:
An infected email attachment spreads a virus when opened.
A USB drive transfers a virus from one computer to another.
A malicious program corrupts files and slows down system performance.
Common technologies and concepts related to Viruses include:
- Malware
- Antivirus Software
- Cybersecurity
- Trojan
- Worm
- Ransomware
- System Protection
- Threat Detection
