If your business relies on Google Chrome, you’re likely familiar with extensions. These handy tools can significantly enhance your browsing experience, from blocking ads to minimising distractions.

The popularity of extensions stems from their ability to add extensive functionality to your browser. However, much like installing apps on your phone, you need to exercise caution when adding new extensions. This is due to the potential risk of malware.

Malware, or malicious software, is designed to cause damage to computers, servers, or networks. Cybercriminals use it to steal data, hijack systems, and even drain bank accounts.

With Google Chrome holding around 65% of the global browser market share, it stands as the most widely used browser, making it a prime target for cybercriminals. While attacks sometimes exploit vulnerabilities within the browser, a simpler method involves using malicious extensions filled with malware.

Despite Google’s vigilant monitoring of the Chrome Web Store, risks persist. A recent report revealed that between July 2020 and February 2023, 280 million people installed a malware-infected Chrome extension. This staggering number underscores the need for vigilance.

Alarmingly, many malicious extensions remained on the Chrome Web Store for extended periods. On average, malware-laden extensions were available for 380 days, while those with vulnerable code stayed up for about 1,248 days. One particularly infamous extension was downloadable for 8.5 years before its removal.

So, how can you safeguard your business against these malicious extensions? Here are five recommended steps:

  1. External Reviews: Since ratings and reviews on the Chrome Web Store can be unreliable (many malicious extensions have no reviews), seek out external reviews from trusted tech sites to assess an extension’s safety.
  2. Permissions: Be wary if an extension requests more permissions than necessary. Extensive access requests could be a red flag.
  3. Security Software: Employ robust security software to detect malware before it causes harm. This acts as your final line of defence if a malicious extension is installed.
  4. Necessity: Consider if you truly need a new extension before installing it. Often, visiting a website can provide the same functionality.
  5. Trusted Sources: Only install extensions from reputable sources or well-known software providers. This significantly reduces the risk of downloading harmful extensions.

Given Chrome’s status as the most popular browser, it will always be a target for cybercriminals. Google’s security team works diligently to review every Chrome extension to ensure safety, but it remains essential to stay alert.

If you’re uncertain about the safety of your extensions or need more advice on securing your business, our team at GZD can help. Contact us for further assistance.


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