Credential theft and browser security were commonly found in Google Chrome browsers due to its wide popularity and usage. Recently, however, cyber criminals have started targeting Mozilla Firefox users. A recent report disclosed a total of eight malicious Firefox extensions that could spy on users and even steal verification tokens.
About the malicious extension
Regardless of the web browser we use, criminals are always on the hunt. Threat actors generally prefer malicious extensions or add-ons; therefore, browser vendors like Mozilla offer background protections and public support to minimize these threats as much as possible. Despite such a measure, on July 4th, the Socket Threat Research Team's report revealed that threat actors are still targeting Firefox users.
According to Kush Pandya, security engineer at Socket Threat Research Team, said that while the “investigation focuses on Firefox extensions, these threats span the entire browser ecosystem.” However, the particular Firefox investigation revealed a total of eight potentially harmful extensions, including user session hijacking to earn commissions on websites, redirection to scam sites, surveillance via an invisible iframe tracking method, and the most serious: authentication theft.
How to mitigate the Firefox attack threat
Users are advised to read the technical details of the extensions. According to Forbes, Mozilla is taking positive action to protect Firefox users from such threats. The company has taken care of the extensions mentioned in the report. According to Mozilla, the malicious extension impacted a very small number of users; some of the extensions have been shut down.
“We help users customize their browsing experience by featuring a variety of add-ons, manually reviewed by our Firefox Add-ons team, on our Recommended Extensions page,” said a Firefox spokesperson. To protect the users, Mozilla has disabled “extensions that compromise their safety or privacy, or violate its policies, and continuously works to improve its malicious add-on detection tools and processes.”
How to stay safe?
To protect against these threats, Mozilla has advised users to Firefox users to take further steps, cautioning that such extensions are made by third parties. Users should check the extension rating and reviews, and be extra careful of extensions that need excessive permissions that are not compatible with what the extension claims to do. If any extension seems to be malicious, “users should report it for review,” a Firefox spokesperson said.