Webcam Hack Check: Is Your Camera Safe?

TL;DR

Yes, a malicious program (often called ‘ratter’ software) can use your webcam without you knowing. However, there are simple steps to check and prevent this. This guide shows you how.

Checking for Webcam Access

1. Check Running Processes: The first step is to see what programs are currently running on your computer.
   • Windows: Press Ctrl+Shift+Esc to open Task Manager. Look at the ‘Processes’ tab. Be suspicious of anything you don’t recognise, especially if it’s using a lot of CPU or memory.
   • macOS: Open Activity Monitor (Applications > Utilities). Look for unfamiliar processes in the ‘CPU’ and ‘Memory’ tabs.
2. Examine Camera Permissions: Your operating system controls which apps can access your webcam.
   • Windows 10/11:
     1. Go to Settings > Privacy & Security > Camera.
     2. See which apps have permission to use the camera. Disable permissions for any app you don’t trust or don’t actively use.
   • macOS:
     1. Go to System Settings > Privacy & Security > Camera.
     2. Review which apps have access and toggle them off if needed.
3. Use a Webcam Blocker: These physically block the camera or digitally disable it.
   • Physical Blockers: A simple webcam cover is very effective.
   • Software Blockers: Several free programs can disable your webcam at the system level (see ‘Useful Tools’ below).

Identifying Suspicious Software

1. Run an Antivirus Scan: A full scan with a reputable antivirus program is essential.
   • Make sure your antivirus software is up-to-date before scanning.
2. Use Anti-Malware Software: Sometimes, ratters can bypass traditional antivirus programs. Use dedicated anti-malware tools like Malwarebytes (free version available).
3. Check Startup Programs: Ratters often add themselves to the startup list so they run automatically.
   • Windows: In Task Manager, go to the ‘Startup’ tab. Disable any suspicious entries.
   • macOS: Go to System Settings > General > Login Items. Remove anything you don’t recognise.

Preventing Future Attacks

1. Keep Your Software Updated: Regularly update your operating system, web browser, and all other software.
2. Be Careful What You Download: Only download software from trusted sources. Avoid cracked software or unofficial websites.
3. Use Strong Passwords: Use strong, unique passwords for all of your online accounts.
4. Enable Two-Factor Authentication (2FA): Where possible, enable 2FA to add an extra layer of security.
5. Be Wary of Phishing Emails: Don’t click on links or open attachments in suspicious emails.

Useful Tools

• Antivirus: Windows Defender (built-in), Bitdefender, Norton, McAfee
• Anti-Malware: Malwarebytes
• Webcam Blockers: CameraBlocker (Windows), iSight blocker (macOS)