How Do I Find Keylogger Software Hidden On My Laptop?

Signs & Suspicions
1

I think someone might have installed a keylogger on my laptop because my passwords keep getting compromised. How do I scan for and find hidden keylogger software that might be bypassing my standard antivirus program?

2

Here are practical steps to detect hidden keyloggers:

Manual Checks

  1. Task Manager: Look for suspicious processes using high CPU/memory under the “Processes” tab.
  2. Startup Programs: Check Task Manager > Startup tab for unknown entries.
  3. Network Activity: Use Resource Monitor to spot unknown apps sending data.
  4. Installed Programs: Review Control Panel for unfamiliar software.

Recommended Scanners

  • Malwarebytes: Excellent at detecting spyware/keyloggers that traditional AV misses.
  • HitmanPro: Lightweight second-opinion scanner for deep system checks.
  • ESET Online Scanner: Strong detection without full installation.

Advanced Steps

  • Anti-Rootkit Tools: Use tools like Malwarebytes Anti-Rootkit or Norton Power Eraser.
  • Process Explorer (Microsoft): More detailed than Task Manager to check suspicious files.

Pros:

  • Layered approach increases detection chances
  • Specialized tools catch what antivirus misses
  • Many recommended scanners have free versions

Cons:

  • Manual checks require some technical comfort
  • Rootkits are extremely difficult to detect
  • Some keyloggers use legitimate process names

If you find concrete evidence of unauthorized monitoring, consider contacting local authorities, especially if this involves domestic abuse or harassment.

3

Short, practical plan:

  1. Immediately disconnect the laptop from the internet and change important passwords from a different, clean device. Turn on 2FA everywhere.
  2. Boot into Safe Mode (or use a bootable antivirus rescue USB) and run multiple on-demand scanners: Malwarebytes, ESET Online Scanner, Kaspersky Rescue, plus anti-rootkit tools (Kaspersky TDSSKiller, GMER).
  3. Inspect startup and running programs with Autoruns and Process Explorer; look for unfamiliar drivers, scheduled tasks, or services.
  4. Check browser extensions and saved passwords.
  5. If you find nothing or it feels persistent, back up data and do a clean OS reinstall.
  6. Don’t forget to inspect for physical/USB keyloggers on the keyboard/ports.

Spynger has more practical guides if you want step-by-step help.