How Your Web Browser Can Expose Your Personal Information – Convenience Comes At a High Price

If you use the Internet—whether for shopping, banking, accessing government sites, or social media—you’re relying on a “web browser” to access websites. A web browser is simply a program that lets you view and interact with pages on the internet, like Google Chrome, Apple Safari, Mozilla Firefox, or Microsoft Edge. Despite being our primary gateway to the internet, these browsers have features that, while convenient, can sometimes lead to unintended information sharing.

A Wake-Up Call – The Online Mistake That Started It All

As a small business owner, I take customer privacy very seriously. My website is designed with secure logins and encrypted customer data, following current security standards. Despite this, a recent incident brought to light just how easy it is to accidentally share personal information while browsing.

One of my customers called, explaining she’d accidentally entered her sister’s details when registering on our site. Puzzled by how this could happen, I looked into it and discovered that modern browsers and their features can sometimes work against users, compromising privacy without them realising it. Here’s a look at how these hidden browser behaviours can impact anyone—and what you can do to take back control.

How Browsers Manage—and Sometimes Mismanage—Your Data

After consulting with IT professionals, we found several major ways that browsers can accidentally expose or mismanage personal data:

1. Cookies: The Building Blocks of Convenience
   Browsers often store small pieces of data called “cookies” on your computer or device to make your browsing experience easier. For example, if you add items to a shopping cart on a site, a cookie keeps track of those items. Every time you load the site, cookies ensure your items are still there. But because cookies are enabled by default in browsers like Chrome and Safari, some websites use them to track your activities, even on other sites, creating privacy issues.
2. Autofill: Browsers Guessing (and Sometimes Misguessing) Your Information
   Most browsers have a built-in “autofill” feature, which remembers and fills in information, like your name and address, based on previous entries. While handy, this feature can lead to unexpected errors—such as auto-filling a family member’s information if you share a computer. The problem is that your browser has autofill enabled by default, which means you may be filling in sensitive information without realising it.
3. Inconsistent Authentication Standards Across Websites
   Websites vary widely in how they handle logins and security, sometimes requiring complex passwords, two-factor authentication (2FA), or other steps. Browsers don’t always handle these steps gracefully and may suggest the wrong information at the wrong time. This inconsistency can lead to errors, like entering an old email address or accidentally revealing a password.
4. Browser-Based Password Management: A Double-Edged Sword
   Many people use a dedicated “password manager” like LastPass, BitDefender, Dashlane, or 1Password to securely store and manage their passwords. These tools allow users to create strong, unique passwords and automatically fill them in as needed. It is virtually impossible to practice safe computing today without using such a service. However, browsers have begun offering their own password management features. While it may seem helpful, browser-based password managers can create confusion:
   • If you use different devices (such as a phone and a laptop), browsers sometimes struggle to sync passwords correctly, or they may not sync at all.
   • Even if you use a password manager, browsers will often prompt you to save passwords in their own systems, potentially storing outdated or incorrect ones.
   • If you change a password on one device, or app, but not in the browser, this can cause problems when you try to log in elsewhere.

With these insights, it’s clear how easily someone can unintentionally share personal data. But you don’t have to be vulnerable. Below are steps you can take to reduce these risks and maintain control over your information online.

Steps to Safeguard Your Information Online

Use a Dedicated Password Manager
Password managers like LastPass, Dashlane, NordPass, Bitwarden, for example, are designed for secure, cross-device password management. Unlike browsers, these tools are built solely for password storage and security, allowing you to create complex passwords and store them securely. Many reputable password managers are subscription-based, but this is a valuable investment for security and peace of mind. Paying for a company to store your valuable “keys” securely, on their equipment, makes good sense.

Change Your Browser’s Default Settings
On each device you use to access the Internet, take a moment to adjust your browser settings to protect your privacy:

• Disable Autofill: In Google Chrome, for instance, go to Settings > Autofill and turn off options like “Save and fill addresses.”
• Turn Off Built-in Password Management: If you’re using a dedicated password manager, turn off browser password storage. In Chrome, this is under Settings > Passwords.
• Disable History Tracking: Browsers keep track of every page you visit, which can be disabled for added privacy. The history information is also used by the browser to predict what you are trying to visit or what information you are trying to enter into a website. While it may be correct sometimes, it is more often inappropriate for the website you are on or for the reasons we will explain next.
• Use Privacy-Oriented Search Engines: For a more private browsing experience, consider setting DuckDuckGo or Brave as your search engine, rather than the default Google or Bing. These search engines prioritise privacy, limiting unnecessary tracking.

Be Aware of the Address Bar
At the top of your browser, you’ll find a “search” or “address bar” where you can type website addresses or keywords to search online. Sometimes, when you start typing, the browser will suggest websites based on your history or common searches. Be cautious, as this can lead you to a similar but incorrect website, especially if you’re typing quickly.

Avoid “Remember Me”, “Stay Logged In” or “Trust this Browser” Options
When logging into a website, avoid selecting options like “Remember me”, “Stay logged in.” or other phrases that suggest convenience. These will compromise security, especially on shared computers or if your device is lost or stolen. If a thief accesses your device, saved logins can make sensitive information vulnerable. This “convenience feature” is a major security risk, regardless of where, or what device you are using. Surprisingly many banks still have this on their websites and they should know better.

Final Thoughts

Browsers and their features can greatly simplify our online lives, but they come with potential risks. By understanding and adjusting these settings, you can browse more securely and prevent accidental information sharing. Taking the time to set up these safeguards ensures that you, not your browser, control your data.