Browser extensions have become an integral part of our browsers. Whether they are ad blockers or anti-viruses, they enhance our everyday productivity and significantly improve our convenience. Since most browser extensions are widely trusted by users due to their ratings on app stores and reviews left about them, they become a viable option for hackers to exploit.

Mac users often assume that their built-in security is enough to never concern themselves with potentially malicious browser extensions. However, due to the nature of extensions, which have the unique ability to track, harvest, and silently misuse data, they carry significant risks.

Chrome Security is Often Overestimated

Users generally trust the Chrome Store with which extensions to apply to their browser. However, ratings and reviews can be easily manipulated. Therefore, it is often assumed that Chrome extension security is weaker than it appears to be. Due to delayed detection by official moderation systems, external protection is necessary as an antivirus solution.

Common Malicious Extensions

The effects of most malicious extensions are a direct threat to your Mac’s security.

  •   They can lead to data-harvesting and tracking browsing habits.
  •   They can inject ads and create redirects while you are using your browser.
  •   They can be spyware-like extensions that record every click, every search, and every form filled.

Harmful Browser Extensions

A browser extension is a tool that is applied to browsers, such as Chrome, offering advantages to having it remain activated. One standard browser extension is an email assistant, which is used to help draft emails. Hence, they are legitimate tools that people often use to create convenience in their lives. Exactly for the same reason, they pose threats. Updates in extensions can often introduce harmful data and create malicious browser extensions. A full guide for cleaning your Mac can be beneficial in removing threats that you may not regularly detect. Hence, in cases where malicious extensions have become a threat, it’s very important not to just delete the extension but rather to completely clean your Mac.

Moonlock provides support to Mac users by helping protect against the harmful risks associated with extensions, in this case.

Find Dangerous Extensions

In order to protect against malicious browser extensions, you can check the app store itself by using reviews to find dangerous extensions. By paying attention to red flags and fake reviews, we can gain a better understanding of malicious extensions.

Red Flags

Some common red flags in user reviews are:

  •   Immediate drops in rating after updates.
  •   Complaints become commonplace about ads and redirects.
  •   There are constant reports of the strange use of data.

Fake Reviews

  •   Early reviews can be misleading as they don’t possess enough information.
  •   Malicious developers often use fake accounts to spread viruses.

Quiet Tracking

Malicious browser extensions allow hackers to quietly track users online through permission abuse, data collection, and cross-site tracking.

Permission Abuse

Often, permissions are abused by taking advantage of users’ hurriedness. Hackers exploit permissions, such as “read and change all data on websites,” by knowing that the majority of the population rarely rejects or reviews them.

Background Data Collection

Through tracking browser history, commonly visited URLs, and even search history, hackers can compile information on users. This data collection is sent to third-party servers without obtaining permission from users.

Cross-Site Tracking

Extensions possess the unique quality of being active on every tab through multiple different websites. They do not simply monitor a single page but rather the entirety of the browser itself. This presents unique risks to privacy and creates a high probability of targeted attacks and manipulation.

Real World Impacts

The impacts of malicious browser extensions in the real world are dire for individual users.

·  There’s a direct loss of browsing anonymity and privacy.

·  There’s an increased risk of targeted scams and phishing.

·  There are performance issues on your Mac; they get significantly slower.

·  There are long-term risks like identity fraud.

Reduce Exposure Going Forward

Reducing exposure isn’t a one-time thing. It requires constant attention and ongoing awareness. Since the risks associated with extensions are great and Chrome extension security is not all that strong, it lies on users to protect their own devices. Building habits that focus on preventing the use of malicious browser extensions is the only way to avoid living in constant paranoia.

Regular Monitoring

Regular monitoring is a must in protecting your device.

  •   It is advised to regularly check extension permissions, specifically those that can affect data on other websites.
  •   You may download an application and agree to permissions that will change after an update, and without any clear notification, the extension may become malicious.
  •   Pay attention to the signs. Signs such as browsers slowing down, unexpected ads, and any changes to your default settings are all clear indicators of potential malicious extensions.
  •   Even highly rated extensions can become malicious over time, due to constant updates. You must make searching for feedback a part of using reviews to find dangerous extensions.

Keeping Clean

Making sure that you’re observing extension hygiene is essential in protecting yourself against malicious browser extensions. This includes:

  •   Only install extensions that serve your specific purpose. There is no reason to create any unnecessary risk. Many come from convenience-based add-ons that don’t particularly have any major benefits.
  •   Even if it seems harmless, every single installation carries its own risk for a potential attack.
  •   Regularly view the full list of your installed extensions and remove any that you do not continually use.

Summing It Up

Malicious browser extensions tend to operate quietly. They work best because of the user’s indifference towards their updates and the permissions associated with their installation. That is why it is of paramount importance to routinely check your extensions and clear out any that aren’t being used.

By using reviews to gather more information about the extensions you are using, you can keep your Mac cleaner. Since extensions can be threats, it is important to have trusted cybersecurity on your devices. Protecting your device is your own responsibility, and it is always better to be aware rather than paranoid.


David M. Higgins II is an award-winning journalist passionate about uncovering the truth and telling compelling stories. Born in Baltimore and raised in Southern Maryland, he has lived in several East...

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