What is Malware?
Malicious software — viruses, spyware, ransomware — that harms your device or steals your data, often installed by a bad download or link.
Malware usually arrives through fake downloads, email attachments, pirated software, or malicious ads. Your best defences are boring but effective: install apps only from official stores, keep automatic updates on, and be sceptical of urgent pop-ups telling you to 'clean' or 'fix' your device. Modern phones and computers include strong built-in protection.