Google is committed to providing a clean, safe and enhanced internet experience through its Chrome browser. In a bid to do so, the company has taken a step closer to make the Chrome browser provide the safest browsing experience.
It has been reported that Google has removed more than 500 malicious Chrome extensions from its official Web Store following a two-months long investigation which was conducted by security researcher Jamila Kaya and Cisco’s Duo Security team.
If you are a frequent user of the Chrome Browser from the family of Google Web-Based Apps yo would most certainly be well acknowledged with what ‘chrome extensions’ are and how they function. These are small programs that can be installed into Chrome browser in order to perform a few activities quickly by a click of a button according to your requirements.
The Google Chrome extensions which are removed are found to be harmful and meant to inject malicious advertisements, popularly known as ‘malvertising’ inside the browsing session of a user who had that extension installed and activated in the Chrome browser.
The injected malicious code from the extensions was prone to get activated under some certain specific conditions after which they redirected the users to specific websites. It was observed that they were mostly affiliate links which redirected to legitimate and safe sites such as that of Dell, Macy’s, or BestBuy but in other cases, however, the destination link would take them to a malicious page like that of a malware download site or a phishing (identity theft) page.
According to the report that has surfaced on various news outlets, the extensions seemed to have been part of a larger malware operation that’s been active for at least two whole years. The research team also holds the belief that the group in charge of the orchestration of this operation might have been active since 2010.
This whole operation was first uncovered by a security researcher named Jamila Kaya during a routine threat hunting when she noticed visits to malicious sites that had a common URL pattern. She used a service named CRXcavator used for analyzing Chrome extensions and unearthed an initial cluster of extensions that run on top of a nearly identical codebase, but used various generic names, with very little and vague information about their true purpose.
She then went on to contact Cisco’s Duo Security Team and with the combined strength they were able to quickly fingerprint them using CRXcavator’s database and discover the entire network.
According to Duo, these first series of extensions had a total install count of more than 1.7 million Chrome users. Later with their solidifying research, Duo and Kaya later reached out to Google with their findings who were cooperative and very prompt to take action according to Kaya.
Google after conducting their own investigation found even more extensions which fit the same pattern and therefore went on to ban more than 500 of these malicious extensions from the Chrome Extensions Store. It still remains unclear what is the total strength of the people who have installed these extensions but an approximate range would be that in the millions.
Google To Deal With Malicious Threats
Google, popularly known as internet behemoth, offers a wide range of products that are used by millions of internet users worldwide. Their Chrome Web Browser is leading the global market share of web browsers by 64.92% as of October 2019.