Safe Internet Browsing: What Is a Browser Extension?

Summary: This article explains what browser extensions are and the risks of using them. Millions of people use malicious browser extensions without realizing it.

What Is a Browser Extension?

If you use a password manager or grammar checking software you probably use a browser extension which is “a small software module for customizing a web browser. Browsers typically allow a variety of extensions, including user interface modifications, cookie management, ad blocking, and the custom scripting and styling of web pages.” For instance, a browser extension for a password manager will ask, “Do you want to remember this password?” each time you enter new login credentials. Grammar software extensions will automatically add corrected spelling or phrasing suggestions. Browser extensions can be helpful or harmful.

Browser extensions were developed to add more functionality to the browsing experience. However, new tech-related things are usually followed by cybercriminals ready to exploit new vulnerabilities. In response, browsers may eventually develop security improvements.

Malicious browser extensions are widespread. Many malicious extensions are relatively benign, even unnoticeable. It is estimated that recently 70% of malicious browser extensions are designed to target users with advertisements or spy on user browser activities. When the pandemic spawned a dramatic increase in online purchases, adware competition to get the attention of prospective shoppers increased and included more browser extensions. Fortunately, there are methods for ramping up your Chrome extensions security and protection.

Browser Protection for Safe Internet Browsing

Browser Protection is the addition of cyber security to web browsers to help protect networked computer systems from being attacked and having private data breached. Before adding extensions, it is critical to know if they are from trusted sources. For example, Chrome Extensions Security offers a comprehensive guide to evaluating different types of “permissions” associated with Chrome extensions. Other popular browsers like Firefox and Safari have their own security suggestions. Many extensions require permissions to make changes on a device or web page for them to run. Here are two common permissions:

• Site Permissions – Site permissions require the extension to be explicit about which websites it is permitted to view or modify if granted permission.
• Device Permissions – An extension might also ask for permissions to access what it needs on a device, such as access to storage, a USB port, etc.

Recently, the three biggest browser extension threats to safe internet browsing have been:

• WebSearch – WebSearch captures users' browsing activities to create a profile for the online offerings they frequent. It then promotes links to its marketing partners to make money from the malicious browser extensions.
  • WebSearch also changes the browser's home page to direct users to affiliated links, thus generating more clicks and revenue.
• AddScript – AddScript runs in the background. Users are lured into using the extensions to gain additional functionality, while the extensions that carry them offer the function of downloading videos from the web.
  • AddScript uses JavaScript to run videos in the background and track YouTube views, generating more revenue.
  • Also, AddScript adds marketing affiliate cookies to the host, creating another revenue stream for the cybercriminal.

A bonus for hackers is that most users do not think about or understand the risks involved when using browser extensions. To be sure that your browser, network and all your devices have sufficient security, it is wise to consult an IT expert before adding an extension.

Chrome Extensions Security

Unfortunately, many individuals and small to midsized business users are under the misconception that off-the-shelf or free virus protection is enough to protect their computers, personal and business data. Whether you work in a company office or access the company network remotely, you might not be aware of all the new threats to your computer and network-connected devices. Having a professional IT assessment once per year or whenever your computer acts differently is affordable and is much less expensive than the costs and liability associated with a cyberattack. Chrome extensions security is only one of many things they can quickly assess.

Remote and On-Site IT Services for Security Assessments

An IT technician can quickly assess your devices and remove any malicious browser extensions, viruses and adware. They can visit your home, office or worksite so that you do not need to disconnect or transport your computer or leave your laptop at a repair shop. Most techs also can perform this service remotely (anywhere with an internet connection). Using secure software, the technician logs in to the session with your permission and performs service while you observe. When the session ends, access ends. You would need to grant a new permission for any additional service sessions. Remote IT service is convenient and fast and can be scheduled at a time that suits your schedule.

IT professionals can also assess your specific IT needs and recommend solutions to improve productivity and keep your system running smoothly. The modest investment in professional IT assistance is a smart way to protect personal and business data and get the most out of computers, networks and mobile devices. This affordable expert service can relieve your IT security worries and free up your time to concentrate on more substantial business or personal tasks.