Seerguard ("the Extension") is a browser extension published by Seerror ("we," "us," or "our") that analyzes your installed Chrome extensions and related signals to help you understand risk. This Privacy Policy applies only to the Extension—not to the main Seerror website or other products, which are covered in our site Privacy Policy. By installing or using Seerguard, you acknowledge this policy.

Overview

We designed Seerguard so trust scores and scan history stay on your device. Remote services receive only what is necessary to classify extensions—typically public extension IDs and security metadata—not your identity or the contents of your tabs.

Data Seerguard Accesses

Seerguard accesses only the following categories of data, through official Chrome extension APIs:

  • Extension metadata — Name, version, permissions, install type, enabled status, and icon of each installed extension, via the chrome.management API.
  • Network request origins (optional) — When you enable this feature, Seerguard observes which domains other extensions contact (hostnames only—not request bodies or page content). This helps surface possible data exfiltration, via chrome.webRequest.

Data Seerguard Does Not Access

  • Your browsing history as a general log of sites you visit (beyond optional domain-origin monitoring described above)
  • Cookies, passwords, or other credentials
  • Full contents of web pages
  • Personal files outside the browser
  • Identity or account information you have not already exposed through normal extension APIs
  • Form field contents you type into websites

External Services

For threat intelligence and store verification, the Extension may contact the services below. Only extension IDs (public Chrome Web Store identifiers) are sent where applicable—not your name, email, or browsing activity.

  • Seerguard API — Our backend analyzes permissions, CSP, vulnerable libraries (e.g. RetireJS-style signals), code patterns, and Web Store metadata. Hosted on Fly.io.
  • CRXcavator API (api.crxcavator.io) — Optional fallback when Seerguard API data is unavailable. Public security tool by Duo Security. Learn more.
  • Chrome Web Store update API (clients2.google.com) — Confirms whether extensions remain listed on the store.

Extension IDs are public identifiers visible on the Chrome Web Store.

Data Storage

Scan results, trust scores, change history, settings, and optional network-origin logs are stored locally on your device using chrome.storage.local. Settings may sync across your signed-in Chrome profiles using chrome.storage.sync, per Chrome’s behavior.

We do not operate a user database for Seerguard. No accounts are required. We do not run in-extension analytics or telemetry to Seerror.

Data Sharing

Seerguard does not sell your data. We do not share scan contents or personal identifiers with advertisers. Network calls described above are limited to the security and store services needed to power the product.

Permissions Explained

  • management — Read the list of installed extensions and their metadata
  • storage — Persist scan results and preferences on your device
  • alarms — Schedule optional periodic rescans
  • notifications — Alert you when high-risk changes are detected
  • webRequest — Observe extension network destinations when monitoring is enabled
  • Host permissions — Limited to Seerguard API, CRXcavator, and Chrome Web Store endpoints needed to fetch security metadata

Your Choices

  • Clear scan data from Settings → Clear Data
  • Clear API cache from Settings → Clear API Cache
  • Disable network monitoring from Settings
  • Disable threat-intelligence API usage from Settings where offered
  • Uninstalling Seerguard removes extension-local data managed by the Extension

Open Source

Seerguard’s source code is available for inspection. You can verify this policy against the implementation in the repository.

Changes to This Policy

We may update this policy from time to time. The Last updated date above reflects the latest revision. Material changes may be communicated through extension update notes, the Chrome Web Store listing, or the Seerguard product page.

Contact

Questions about this Extension Privacy Policy:

Seerguard Browser v1.0.0 — Powered by Seerror