New processes or tasks you don’t recognize
Security tools crash or won’t update
Unusual network connections or spikes when idle
System settings change without your input
Bundled installers from unofficial sites or “free” repacks
Phishing attachments and fake update prompts
Exploited vulnerabilities in outdated software
Disconnect from the internet to stop further downloads.
Run a full anti-malware scan, quarantine findings, reboot, then scan again.
Check startup items, scheduled tasks, services, and browser extensions - remove unknowns.
From a clean device, change passwords and enable MFA.
Review firewall or DNS logs and block contacted domains.
Install apps only from official sources - avoid cracks and repacks.
Keep Windows and applications updated.
Use reputable EDR or anti-malware with real-time protection.
Consider DNS filtering to block known malicious hosts.
Practice least privilege and review admin rights regularly.