malicious extensions

Modern antivirus solutions have reduced PC infections, but risks persist as cybercriminals develop stealthy methods to infiltrate systems. Signs of infection include unfamiliar programs, missing files, slow performance, and disabled security settings. If infection is suspected, disconnect from the internet, boot into Safe Mode, and run a full system scan with Windows Security or Microsoft Defender. To enhance cybersecurity post-infection, users should clear temporary files, reset browser settings, uninstall suspicious applications, scan external drives, keep Windows updated, use strong passwords, and verify sources before engaging with links or attachments. Tools like VirusTotal can help scan files from unverified sources. If performance issues continue, a complete reinstallation of Windows 11 may be necessary, ensuring essential files are backed up first.