Previously, we looked at what browser extensions are, how they are used, and why they can be both helpful and risky. In this article, we take a closer look at why that caution matters. Recent advisories and enforcement actions from organizations such as the Center for Internet Security (CIS,) and the Federal Trade Commission (FTC) remind us that browser-related risks are real. They can involve security flaws, data collection, privacy concerns, and deceptive practices that affect all of us.

Understanding these warnings can help us make better decisions about which extensions to install, which ones to remove, and what steps to take when something does not seem right.

The CIS (https://www.cisecurity.org/advisory) regularly issues advisories about vulnerabilities in widely used software, including web browsers. These advisories often warn that certain browser vulnerabilities could allow “arbitrary code execution,” which basically means if attackers successfully exploit the flaw, they may be able to run harmful code on your computer. Depending on the situation, an attacker could view, modify, or delete data, install programs, or gain access with your privileges.

Although CIS advisories often concern the browser itself rather than a specific extension, they still matter because extensions operate within the browser environment. If the browser is outdated, the entire browsing experience becomes riskier. A user may think, “I only installed one simple extension,” but that extension still depends on a secure browser.

The FTC’s concerns focus heavily on privacy, data collection, and deceptive practices. In one major browser-related case, the FTC alleged that Avast, an antivirus software company, collected consumers’ browsing information through browser extensions and its antivirus software, then sold that information without adequate notice or consent. This is important because many people install security or privacy tools believing they are being protected, not realizing that the tool itself may be collecting sensitive information.

Browsing data can reveal a great deal about a person. It may show health concerns, financial interests, religious activity, political interests, job searches, shopping habits, family matters, personal struggles, and more.

So how should you respond?

1. Update your browser. No matter which browser you use, make sure automatic updates are enabled. If you don’t know how, open your browser settings and look for “About” or “Update.” Updates often include security patches that close known holes.

2. Audit your extensions. In your browser settings, look for “Extensions” or “Add-ons.” Review every item listed. If you do not recognize it, remove it. If you no longer use it, remove it. If it asks for broad access to all websites and does not clearly need that access, consider removing it or limiting its permissions.

3. Pay attention to permissions. A password manager may need to interact with login pages. A screen reader may need access to page content. But a simple shopping coupon tool, wallpaper extension, or game should not need unlimited access to everything you do online. When the permission seems bigger than the purpose, that is a red flag.

4. Separate convenience from trust. A tool that saves you time may also collect your data. Before installing, research the developer, read independent reviews, and look for recent complaints. Avoid extensions with vague descriptions, poor grammar, fake-looking reviews, or no privacy policy.

5. Be especially cautious with extensions related to security, privacy, coupons, cryptocurrency, downloads, and artificial intelligence tools. These categories can be useful, but they may also be attractive to scammers because users often grant them broad access.

6. Organizations should create a browser extension policy. Employees and volunteers should know which extensions are approved, which are prohibited, and who to contact before installing a new one. This is especially important for anyone handling donations, payroll, personal/health information, client records, or confidential documents.

7. Use separate browser profiles when needed. For example, use one browser profile for personal browsing and another for work, church, or business activity. This can reduce the chance that a questionable extension used casually affects sensitive accounts.

8. Watch for warning signs. If your browser suddenly slows down, changes your homepage, opens unexpected tabs, displays strange ads, redirects searches, or asks you to log in repeatedly, something may be wrong. Remove suspicious extensions, update your browser, run a trusted security scan, and change passwords for sensitive accounts if needed.

Browser extensions are not going away. In fact, as more people use AI and other tools, extensions may become even more common. That makes awareness much more important. So, before adding anything to your browser, pause and ask, “What will this extension be able to see, change, or collect?” If the answer makes you uncomfortable, do not install it.

Remember, convenience is valuable, but privacy and security are priceless.

Karen Clay, Clay Technology and Multimedia

Courtesy, Karen Clay