This add-on was removed from Firefox Add-ons Store on 2025-07-10
Features & Capabilities
User Growth & Download Statistics
Manifest V2 Add-on
- By:
- dev.official
- Daily users:
- 17
- Rating:
- 3.00 (2)
- Version:
- 1.0 Last updated: 2025-03-10
- Version code:
- 5906055
- Creation date:
- 2025-03-07
- Risk:
- High risk impact High risk likelihood
- Permissions:
- Content scripts matches:
- <all_urls>
- <all_urls>
- Size:
- 1.38MB
- Full description:
- See detailed description
- Source:
- Firefox Add-ons Store
- Data ingested on:
- 2025-07-10
- Compare stats and ranking:
- Undo Closed Tabs Button vs Undo Closed Tabs
- Undo Closed Tabs Button vs Undo Close Tab
- Undo Closed Tabs Button vs Reopen Closed Tabs
Contact the developer
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User Reviews
This add-on asks to sharing my bandwidth with big companies. This type of add-on should be baned from extensions !!! It is a total shame that mozilla doesn't check
"it will let you share unused bandwidth with trusted companies who use it to access the internet"
by Fi*****, 2025-06-16
Is Undo Closed Tabs Button 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.
Undo Closed Tabs Button 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.
- Critical ****** ****** ** *** ********* ****** * *********** ******** **** ** ** *** ******* *** ****** **** **** *** ******* *****
- High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
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.
Undo Closed Tabs Button may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.
Risk likelihood analysis details
- Critical This extension is not longer available in the store
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