What it is
Malware is any software made to harm your device or data. It can steal passwords, lock your files, spy on activity, or hijack your browser. For a quick primer and examples, see our malware explainer.
How it spreads
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Phishing emails and fake attachments
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“Free” repacks, cracks, and shady download sites
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Malicious ads and fake update prompts
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Exploits against outdated apps or plugins
What you may notice
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Pop-ups, redirects, or a homepage you didn’t set
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Slower performance, high CPU or fan noise when idle
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New toolbars, extensions, or programs you don’t remember installing
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Security tools crash or won’t update
Remove it now
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Disconnect from the internet.
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Run a full anti-malware scan, reboot, then scan again.
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Remove unknown startup items, tasks, services, and extensions.
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From a clean device, change passwords and turn on MFA.
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Check bank and email accounts for unusual activity.
Prevent it
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Install software only from official sources and avoid cracks.
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Keep your OS, browser, and apps updated.
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Use reputable EDR or anti-malware plus DNS/web filtering.
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Block macros by default and verify invoices or links out of band.
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Use a password manager and MFA on important accounts.