Is That Chrome Extension Filled with Malware?

If you use Google Chrome for your business, you’re likely familiar with extensions. These nifty tools can boost your browsing experience in countless ways, from blocking pesky ads to minimizing distractions. But, just as you should be careful when downloading new apps on your phone, you need to be cautious with browser extensions. Why? Because they can be hiding malware.

Malware, short for 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. Given that Google Chrome commands about 65% of the global browser market share, it’s a prime target for cyberattacks. While some attacks exploit browser vulnerabilities, many more come through malicious extensions.

Even though Google monitors the Chrome Web Store closely, bad extensions still slip through the cracks. A recent report reveals that between July 2020 and February 2023, 280 million people downloaded malware-infected Chrome extensions. That’s a staggering number and underscores the need for vigilance.

Shockingly, many malicious extensions stayed available on the Chrome Web Store for a long time. On average, malware-filled extensions remained up for 380 days, while those with vulnerable code were available for around 1,248 days. One particularly bad extension was available for a whopping 8 and a half years before it got the boot.

So, how can you protect yourself and your business from these malicious extensions? Here are five steps we recommend:

1. External reviews: Don’t rely solely on ratings and reviews in the Chrome Web Store. Instead, look for reviews from trusted tech sites to evaluate an extension’s safety.
2. Permissions: Be wary if an extension asks for more permissions than necessary. If a new extension requests extensive access to your data or system, consider it a red flag.
3. Security software: Use robust security software to catch malware before it can cause harm. This is your last line of defense if you accidentally install a malicious extension.
4. Necessity: Before installing any new software or browser extensions, ask yourself if you really need it. Often, you can achieve the same functionality by visiting a website.
5. Trusted sources: Only install extensions from trusted sources or well-known developers. This significantly reduces the risk of downloading a harmful extension.

While Chrome’s popularity makes it a frequent target for cybercriminals, Google’s security team works tirelessly to review every Chrome extension to ensure safety. However, your vigilance is crucial too.

If you’re unsure about the safety of your extensions or need more advice on keeping your business secure, our team is here to help. Get in touch!