Antivirus
Antivirus is software designed to detect, block, and remove malicious programs from a device. Its main purpose is to protect computers, phones, and systems from viruses and other types of malware.
How it works
Antivirus software scans files, programs, and system activity to look for suspicious behavior. It compares files to known malware patterns and also monitors actions that may indicate a threat.
When a threat is found, the antivirus can block, quarantine, or delete it.
What antivirus protects against
Antivirus helps protect from:
- viruses
- Trojans
- worms
- ransomware
- spyware
Modern antivirus tools often provide real-time protection.
Why antivirus is important
Without antivirus software, malware can:
steal personal data
damage or delete files
- slow down the system
- allow unauthorized access
Antivirus acts as a first line of defense.
Is antivirus enough?
Antivirus alone is not always enough. Safe browsing habits, software updates, and user awareness are also essential parts of cybersecurity.
Simple example
Antivirus is like a security guard that checks everything entering your device and stops anything dangerous.
Related terms
- What is Firewall?
- What is Ransomware?
- What is Phishing?
Source
Information simplified from the Wikipedia article “Antivirus software”.