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Tarcza Sentinel

ExtensionFunctionality & UI4 users
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Item media 1 (screenshot) for Tarcza Sentinel
Item media 1 (screenshot) for Tarcza Sentinel
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Overview

Scan marketplace images for AI-generated fraud detection

Tarcza Sentinel helps you assess whether a photo you are viewing may have been generated by artificial intelligence. Its result is a probabilistic signal, not proof that an image is authentic or AI-generated. Main features: * Local protection for visible photos in social-media feeds. * Separate consent for every site; all social sites are disabled by default. * On-device analysis using WebGPU, with WebAssembly fallback. * A red border and confidence label for photos with an AI score of at least 90%. * Filtering of small icons, avatars, and other interface elements. * A separate Full Sentinel cloud scan for users who deliberately request extended analysis. Benchmarks of included model: * AUROC: 99.45% * Accuracy: 97.40% * Precision: 97.87% * Recall: 95.46% * F1: 96.65% * Equal error rate: 2.73% * Recall at 1% FPR: 94.24% * Expected calibration error: 1.19% Automatic local protection does not transmit analyzed photos to Sentinel or third parties. The extension accesses a selected site only after the user enables it and accepts Chrome's permission prompt. Privacy policy: https://tarczasentinel.pl/polityka-prywatnosci

Details

  • Version
    0.3.6
  • Updated
    July 16, 2026
  • Features
    Offers in-app purchases
  • Offered by
    Tarcza Sentinel
  • Size
    60.15MiB
  • Languages
    2 languages
  • Developer
    Email
    p.szmielew@ava.waw.pl
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

Manage extensions and learn how they're being used in your organization

Tarcza Sentinel has disclosed the following information regarding the collection and usage of your data. More detailed information can be found in the developer's privacy policy.

Tarcza Sentinel handles the following:

Personally identifiable information

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes
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