LinkFence – Privacy Policy

—Overview

LinkFence is a browser extension that protects users from phishing, scam domains, typosquatting, and malicious links in real time. This Privacy Policy explains what data the extension accesses, how it is used, and how it is stored.

1Data Collection

LinkFence does NOT collect, transmit, or share any personal data.

No analytics or telemetry

No user accounts or registration

No cookies or fingerprinting

No data is sent to any server owned or operated by LinkFence

No third-party tracking scripts or SDKs

2Data Storage

All data is stored exclusively on your device using chrome.storage.local. No data ever leaves your browser.

The following data is stored locally:

Personal whitelist and blacklist entries
User preferences (sensitivity level, theme, language)
Inspection history and timeline entries
Aggregated protection statistics and Safety Score data
Cached threat feed data for offline lookups

You can clear all stored data at any time by removing the extension.

3Permissions and Their Purpose

storage	Saves and reads data in the browser's local storage area. Used for persisting preferences, lists, inspection history, cached databases, and statistics. Does not access external storage or sync data to any server.
alarms	Schedules periodic background tasks. Used for automatic database updates (every 1–12 hours), cache purge, and timeline trimming. Does not wake your device or run when the browser is closed.
tabs	Reads the URL of the currently active tab. Used to check the current website against threat and trusted domain databases and update the toolbar icon color. Does not read page content, access browsing history, or modify any web page.
webNavigation	Observes navigation events including redirects. Used to analyze redirect chains where a URL passes through intermediate domains. Does not block or modify navigation, inject content, or record full browsing history.

4Host Permissions

All requests are read-only GET — no data is uploaded. No authentication tokens or user identifiers are sent.

The extension requests network access exclusively to download publicly available threat databases:

raw.githubusercontent.com MetaMask phishing list — crypto phishing domains

api.llama.fi DeFiLlama — verified DeFi protocol domains

urlhaus.abuse.ch URLhaus — malicious URLs and distribution sites

openphish.com OpenPhish — active phishing URLs feed

5What the Extension Does NOT Do

Read, modify, or inject content into web pages

Access browsing history beyond the active tab URL

Capture keystrokes, form inputs, passwords, or credentials

Take screenshots or access camera / microphone

Communicate with any server other than the four listed above

Sell, share, or transfer data to third parties

Display advertisements

Use remote code execution

6User Control

Adjust sensitivity level at any time in Settings

Enable or disable redirect chain analysis and reputation checks

Manage personal whitelist and blacklist

Export or delete all your data at any time

Uninstall the extension to remove all stored data completely

7Children's Privacy

LinkFence does not knowingly collect any personal information from anyone, including children under the age of 13.

8Changes to This Policy

If this Privacy Policy is updated, the changes will be published alongside the extension update.