Copy Guard

Name: Copy Guard
Rating: 4.6667 (3 reviews)
Author: ruudschroen

By: ruudschroen

A simple browser extension that warns you when your copy action was hijacked.

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Features & Capabilities

This extension warns you whenever your copy action was hijacked. When you select text and copy it, this extension will compare your selection with the data that was added to your clipboard. If there is a difference, a native notification will be triggered.

Since version 1.1.0 you will receive a warning if your text selection contains hidden or offscreen elements.

IMPORTANT NOTICE: This extension asks for permission to "access your data for all websites". While this may seem invasive, it is required for injecting a script upon loading the page. This script will listen to the copy event and retrieve your current text selection. Please rest assured that no other data is being collected. The source code of this extension has been reviewed by Mozilla and is available on Github.

User Growth & Download Statistics

Add-on

By:

Daily users:

Rating:

Version:

2.0.0 Last updated: 2024-02-21

Version code:

5695362

Creation date:

2020-12-08

Risk:

Permissions:

Content scripts matches:

Size:

136.99KB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-17

Compare stats and ranking:

Ranking

# 25,086 ▼ 718

Other platforms

Copy Guard (v2.0.0)

75 5.00

(4)

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:

ruudschroen

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/copy-guard/

Website:

https://github.com/roedesh/copyguard

Permission Change History

2024-02-21: Version 1.3.0 → 2.0.0

Remove Permissions: clipboardRead

User Reviews

This should be standard in Firefox! I regularly need to copy scripts from the web, and I am very hesitant to paste sudo commands that might have been altered. The only reason for a 4-star rating is that it often takes many seconds to show the notification, during which the browser is completely unresponsive.

by ha*****, 2022-11-06

View all user reviews ›

Is Copy Guard 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.

Copy Guard requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
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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.

Copy Guard has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
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