Copy Guard

A simple browser extension that warns you when your copy action was hijacked.
What is Copy Guard?
Copy Guard is a simple Firefox add-on that warns you when your copy action is hijacked. It compares your selected text with the data added to your clipboard and triggers a notification if there is a difference. It also warns you if your selection contains hidden or offscreen elements. This extension is designed to protect your copy actions and has been reviewed by Mozilla.
Download

Add-on stats

Users: 26
Rating: 4.67 (3)
Version: 2.0.0 (Last updated: 2024-02-21)
Creation date: 2020-12-08
Weekly download count: NaN
Firefox on Android: No
Risk impact: Moderate risk impact
Risk likelihood: Moderate risk likelihood
Manifest version: 2
Permissions:
  • notifications
  • storage
Size: 140.28K
URLs: Website

Ranking

# 17734 ▼ 109

Other platforms

Copy Guard (v2.0.0)
5.00 (3) 59
Not available on Edge
Want to check extension ranking and stats more quickly for other Firefox add-ons? Install Chrome-Stats extension to view Chrome-Stats data as you browse the Firefox Browser Add-ons.

Add-on summary

Analyze keywords

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 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 hannodv, 2022-11-06
View all user reviews

Add-on safety

Risk impact

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

Risk likelihood

Copy Guard is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Upgrade to see risk analysis details