Published 16 June 2026 · Home Users · by the 365 Techies team — Microsoft Partners & Dell specialists, looking after Dorset since 1995
Modern malware often tries to stay hidden, but it usually leaves clues. Spotting them early limits the damage.
Common symptoms
Sudden slowness, pop-ups and adverts, programs you did not install, your browser homepage changing, files you cannot open, or friends receiving odd messages from you can all point to an infection.
What to do
Disconnect from the internet, avoid logging into banking, and run a full antivirus scan. If anything looks serious — especially ransomware demanding payment — get expert help straight away rather than risking your data.
Key points
- Watch for pop-ups, slowness and strange programs
- Disconnect and avoid logging into sensitive accounts
- Run a full antivirus scan
- Get help fast if you suspect ransomware
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