Mozilla Blocks Malicious add-ons Installed by 455k Users

Share post:

Mozilla recently blocked malicious Firefox add-ons called Bypass and Bypass XM that were installed by 455,000 users.

The add-ons in question used the API to intercept and redirect web requests, preventing users from performing several actions, including downloading updates, updating remotely configured content, and accessing updated block lists.

Although Mozilla did not specify whether the two add-ons would do anything else malicious in the background, Bleeping Computer’s research into the nature of the two add-ons showed that they would likely use a reverse proxy to bypass paywall websites.

Mozilla has also added a system add-on that is hidden and impossible to disable known as Proxy Failover.

The new add-on prevents similar malicious add-ons from abusing the same API and prevents attempts to interfere with update mechanisms of current and older Firefox versions.

To ensure that other users are not affected, Mozilla recommended that they upgrade their web browsers to at least the latest version of Firefox 93.

For more information, read the original story in Bleeping Computer.

SUBSCRIBE NOW

Related articles

Sleeper Supply Chain Attack Activates After 6 Years

A coordinated supply chain attack has compromised between 500 and 1,000 e-commerce websites by exploiting vulnerabilities in 21...

Russian-Controlled Open Source Tool Raises Alarms Over U.S. Cybersecurity

A widely used open-source Go library, easyjson, used in healthcare, finance and even defence has come under scrutiny...

Signal Archiving Tool Used By Trump Admin Is Breached, Raising Alarms Over Messaging Security (EDITORIAL)

(EDITORIAL) A messaging tool used by Trump administration officials to archive encrypted Signal messages has been hacked —...

Anthropic Warns: AI “Virtual Employees” Could Pose Security Risks Within a Year

Anthropic, a leading artificial intelligence company, anticipates that AI-powered virtual employees could begin operating within corporate networks as...

Become a member

New, Relevant Tech Stories. Our article selection is done by industry professionals. Our writers summarize them to give you the key takeaways