Port Authority

Name: Port Authority
Rating: 4.6351 (74 reviews)
Author: Hacks and Hops

Blocks malicious websites from port-scanning your computer/network and dynamically blocks all LexisNexis endpoints from running their invasive data collection scripts.

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Features & Capabilities

Port Authority is a free, open-source Chrome extension designed to protect users from malicious port scanning attacks and invasive tracking scripts, specifically those from LexisNexis ThreatMetrix. It dynamically blocks all types of port scanning (HTTP, HTTPS, WebSocket, FTP) and stops LexisNexis endpoints from running data collection scripts, safeguarding your networking privacy.

The extension is lightweight with approximately 200 lines of commented code, making it fully auditable. It features optional browser notifications for blocked threats and a whitelist to allow trusted domains. Port Authority respects privacy by not storing or transmitting user data. It includes testing tools, comprehensive permissions for effective functionality, and detailed documentation linking to its code repository and related reverse-engineering resources. Users wanting privacy from network-level invasive scripts and scans will find this extension valuable.

User Growth & Download Statistics

Add-on Privacy & Security Developer Tools

By:

Daily users:

Rating:

Version:

2.2.0 Last updated: 2025-06-30

Version code:

5972715

Creation date:

2021-03-22

Risk:

Permissions:

Size:

52.11KB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-19

Compare stats and ranking:

Ranking

# 455 ▲ 1

Other rankings

#13 in Web Development

#24 in Privacy & Security

#1 in author keyword 14

#1 in post keyword 22

#1 in sport keyword 10

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For Developers

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Hacks and Hops

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/port-authority/

Website:

https://github.com/ACK-J/Port_Authority

Permission Change History

2025-05-05: Version 2.0.0 → 2.1.0

Remove Permissions: unlimitedStorage

User Reviews

Overall, the reviews are positive: the add-on works as advertised, and users praise its network-protection features (notably alerting on local network scans and blocking LAN intrusion). It is considered feature-rich and more capable than comparable tools. However, some users report issues like performance impact, unclear exception configuration, and occasional compatibility problems in certain setups. The tone is enthusiastic, with many saying it does exactly what it promises and expressing surprise and approval at its capabilities.

Pros

Works as advertised and does what it promises.
Blocks local network intrusion attempts and provides alerts when such activity is detected.
Feature-rich and viewed as more capable than similar tools, with added functionality after updates.

Cons

Recent reviews

good

by Fi*****, 2026-06-07

Great extension that you just install and forget about while it still protects you against port scanning without breaking anything.

by su*****, 2026-05-14

by ni*****, 2026-05-04

View all user reviews ›

Is Port Authority Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Port Authority requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details

Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Port Authority has earned a good reputation and can be trusted.

Risk likelihood analysis details

Medium This extension has medium user count. Unpopular extensions may not be stable or safe.
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