What is Malware?
Malware is any software intentionally designed to cause damage or gain unauthorized access. Learn its types, how it spreads, and how to defend.
AI Answer
Malware is software intentionally designed to damage devices, steal data, or gain unauthorized access. Defend by keeping systems updated, using reputable antivirus, and being cautious with links and attachments.
Definition
Malware (malicious software) is any program or code specifically designed to harm a computer, network, or server, or to steal data and gain unauthorized access.
Overview
Malware is a broad term for any software intentionally created to cause harm. It can damage systems, exfiltrate data, spy on users, or lock files for ransom.
Common types
- Trojan — disguises itself as legitimate software.
- Ransomware — encrypts data and demands payment.
- Virus — self-replicating code that attaches to files.
- Spyware / RAT — secretly monitors or remotely controls a device.
How it spreads
Malware typically arrives through phishing emails, malicious downloads, infected removable media, drive-by downloads, and unpatched vulnerabilities.
Defense
- Keep operating systems and software updated.
- Use reputable antivirus/EDR with real-time protection.
- Avoid opening suspicious attachments or clicking unknown links.
- Verify file hashes before executing downloaded files.
- Back up important data regularly and keep backups offline.