Is BlockSite safe?

Low risk

BlockSite sends per-navigation browsing history and a persistent device identifier to its servers when the user enables analytics.

When analytics is opted in, the extension captures the current URL, previous URL, a timestamp, and a persistent GUID on every completed navigation, encodes the payload, and transmits it to adult.yourblocksite.com. The extension also stores the account lock password as reversible base64 in local storage, and when account protection is enabled it writes that password alongside all extension settings into a cookie that is transmitted to blocksite.co during the uninstall flow.

Part of this rating comes from analysis signals we haven't published as detailed findings yet.

Blocksitev4.0.8.3resigned1Firefox Add-ons
20Risk

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

Data recipients

adult.yourblocksite.comblocksite.co
Updated 17 September 2026amo-3145