Why Is Google Asking for a CAPTCHA After I Removed Malware?
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MellowPine47
I recently found what appeared to be a Trojan on my computer. I ran several antivirus scans, including Microsoft Defender's offline scan, and removed the detected file. I've also changed my passwords from a different laptop and reinstalled Microsoft Edge. Since then, Google has been asking me to complete a CAPTCHA and says it has detected unusual activity from my computer network when I search using the browser's quick-search bar. I had never seen this message before, so I'm worried the malware might still be present. What should I check or do next?
Answers
Microsoft Defender is generally sufficient for routine protection, especially if it detected and removed the Trojan. Running several real-time antivirus programs at once can cause conflicts, so it’s better to keep one primary antivirus enabled rather than installing multiple products. You can still run an occasional second-opinion scanner if needed, but avoid stacking multiple active antivirus programs.
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That warning by itself doesn’t indicate that malware is still on your computer. Search engines sometimes show a CAPTCHA when they receive an unusual number of requests from the same network, when your IP address has recently changed, or when traffic resembles automated searches. It can happen randomly and may simply disappear after a while.
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MellowPine47: So the CAPTCHA isn’t necessarily connected to the Trojan, even though it started appearing afterward?
PixelRook62: Correct. The timing can be unsettling, but the CAPTCHA is usually related to Google’s network-traffic detection rather than proof that an infection remains. Keep Defender updated, install system updates, and watch for other symptoms such as unexpected pop-ups, browser redirects, or unknown programs.