Scan a Document and Hand Over Your Data: The Truth About CamScanner

You know that feeling when you find a free app that does exactly what you need? CamScanner is that app for millions—until you realize it might be scanning more than just your documents. In 2019, security researchers discovered that CamScanner contained a malicious Trojan module that displayed intrusive ads and could even subscribe users to premium services without consent. While the developers removed the malware after the uproar, the incident exposed a troubling pattern: the app has a history of aggressive data collection and questionable permissions.

Reading CamScanner's privacy policy is about as fun as scrubbing grout with a toothbrush, but here's the gist: the app collects device IDs, location data, network information, and even your photos and files. It shares this data with third-party analytics and advertising partners. And if you're using the free version, you're the product.

What data does CamScanner actually collect?

According to its privacy policy, CamScanner may collect: device identifiers (IMEI, MAC address), approximate location, app usage statistics, and—most concerning—the content of scanned documents. This data is shared with Tencent, Alibaba, and other Chinese tech giants for analytics and ad targeting.

How to lock down CamScanner's permissions

Here's a step-by-step guide to stop CamScanner from snooping:

On Android:

Go to Settings > Apps > CamScanner > Permissions. Revoke access to Camera, Storage, and Location if not needed. Then go to Settings > Apps > CamScanner > App info > Mobile data & Wi-Fi and disable background data. Finally, in the app itself, go to Settings > Privacy and disable "Personalized recommendations" and "Share usage data."

On iOS:

Go to Settings > Privacy > Tracking and toggle off "Allow Apps to Request to Track." Then go to Settings > CamScanner and disable Background App Refresh. In the app, go to Settings > Privacy and turn off "Share Analytics."

Still want to use CamScanner? Consider the paid version, which promises no ads and less data collection. Or switch to a privacy-focused alternative like Microsoft Lens or Adobe Scan. Your documents deserve better than being fodder for an ad network.