Chrome Web StoreNo malware found
In code review (v25.5.0)
Our reviewer read version 25.5.0 — the most recent version we have reviewed — and found no malicious behaviour. The version shown here has not been individually reviewed yet.
What our analysis found
uBlock, used by 1,000,000 people, showed no malicious code in Extension Auditor's review. Its permissions mean it can read and change data on all websites, can inject scripts into pages and can observe network requests. It comes from a trusted publisher and was last updated in September 2026.
The extension implements typical ad-blocking functionality using declarativeNetRequest rules, content scripts, and a popup UI. The permissions (webRequest, scripting, host access) are required for ad blocking. No evidence of data exfiltration, credential theft, or malicious code was found in the reviewed source files. The absence of the main background worker and content script limits full verification, but the accessible code (popup, options, API layer) is consistent with a legitimate ad blocker. The ML model likely flagged the extension due to broad host permissions and webRequest usage, which are expected for this category.
uBlock Chrome extension security report
ID: epcnnfbjfcgphgdmggkamkmgojdagdnn
Supported Languages
Extension Info & Metadata
Publisher Contextual Analysis
- Author
- https://www.ublock.org/
- Privacy
- Privacy Policy
- Help
- Help Center
- Country
- US
- MX records exist
- Yes
- Domain exists
- Yes
- Is disposable
- No
- Is role-based
- No
- Mailbox exists
- Yes
- Address
- 1180 W Peachtree St NW suite 2100 Atlanta, GA 30309-3407 US
- Website
- Visit
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Screenshots & videos
Install growth
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About this extension
A no-nonsense ad blocker
Read the publisher’s full description
uBlock: A no-nonsense ad blocker. The official uBlock extension has been downloaded millions of times and is used all over the world. Install today and enjoy a hassle-free browsing experience! Why uBlock? ☑ Block ads on YouTube, Facebook, and the rest of your favorite sites ☑ Easy to set up, so you can get your pop-up blocker going right away ☑ No customization needed: automatically provides you with the best ad blocking ☑ Protect yourself from trackers, crypto-miners, other privacy risks ☑ Fast performance: less strain on your computer so you can browse with ease ☑ Free to use, making it easy to jump in and start removing ads ------------------------- What is uBlock? uBlock is an ad and content blocker designed to be lightweight and efficient. uBlock blocks ads on all websites, including Facebook and YouTube. uBlock also protects you against malicious crypto-mining scripts used by sites to use your CPU and slow down your web browsing. One of the fastest adblockers available, uBlock is simple to set up and easy to use. ------------------------- Set and forget. Add uBlock to your browser to automatically block ads, pop ups, and trackers. Browse faster. Learn more at https://www.ublock.org/
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Extension files
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No network indicators were extracted from this version.
Code Diff
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0 changed files detected
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