How to protect from browser leaks

Milan Stanojevic
by Milan Stanojevic
Deputy Editor
Affiliate Disclosure

  • Protecting your privacy online is important, but how well do web browsers protect your data?
  • Browser leaks are a common occurrence, and in today’s article, we’ll show you how to prevent them from leaking your data.
  • To learn more about online security, we strongly suggest visiting this Cybersecurity section.
  • A web browser is an essential tool, and for more information, take a look at our Browsers Hub.
browser leaks
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We use browsers on a daily basis, but did you know that your web browser can certain information in the background?

This can be a security concern, and in today’s article, we’ll explain to you what information can your browser leak to third parties and how to prevent that.

How do I deal with browser leaks?

1. What information can my browser leak?

question browser leaks

1.1 Your IP address

The first information that your browser can leak is your IP address. By doing so, third parties can see your current state, ISP, region, and in some cases your city.

1.2 WebRTC leak

In some instances, WebRTC API can be used to expose your IP address, even if you’re using a VPN. That’s why it’s important to perform a WebRTC leak test online.

1.3 JavaScript

JavaScript is a widely used web technology, but it can also reveal some of your information. In most cases that information includes your system resolution, current time, and web browser.

1.4 Geolocation

Most modern browsers support the Geolocation feature that will reveal your current location. Browsers will usually ask for permission to access your current location, so be sure to deny it in order to stay safe.


2. How to protect against browser leaks?

2.1 Use a secure web browser

Opera browser

To protect yourself from browser leaks, it’s important to use a secure web browser such as Opera.

The browser has its own tracking protection, so it will block tracking scripts and cookies that can leak your data.

Opera also has an ad blocker so you won’t see any ads, and by blocking ads your pages will load faster. It’s also worth mentioning that the browser has its own free VPN with unlimited bandwidth.

There’s also Cryptojacking protection that will stop all mining scripts. So, if you like the idea of secure and private browsing, Opera is an ideal browser.

Opera

Opera

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2.2 Use HTTPS protocol

Always use websites that work with HTTPS protocol. The older HTTP protocol isn’t encrypted, which means that everybody can intercept your traffic and read the data you send to the website.

If a website uses HTTPS, all the data that goes between you and the website will be encrypted and unable to read.

To check if the website you’re on is using HTTPS, just check its address in the address bar or look for the lock icon left from the address.

https address bar browser leaks

2.3 Be careful with extensions/add-ons

Certain extensions can leak your information, so be sure to use extensions only from reliable sources. To be on a safe side, it’s best to keep the number of extensions as low as possible.

In addition to extensions, you shouldn’t use Flash, Java, or Silverlight add-ons since they are not being supported by web browsers due to security reasons.

Browser leaks can be a security risk, but we hope that you understand how to better protect against browser leaks after reading this article.

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Frequently Asked Questions

  • IP leak is the reveal of the user’s IP address while using a VPN. This usually occurs if there’s a glitch with the VPN.

  • To prevent IP leaks from occurring, it’s advised to use a VPN or a browser with a VPN such as Opera.

  • To find if your DNS is leaking, use one of many available DNS leak testing websites that are available online.

  • First, you need to perform a DNS leak test. If your DNS is leaking, you might want to change it to Google DNS or get a VPN with its own DNS.

  • IP leak is the reveal of the user’s IP address while using a VPN. This usually occurs if there’s a glitch with the VPN.

  • To prevent IP leaks from occurring, it’s advised to use a VPN or a browser with a VPN such as Opera.

  • To find if your DNS is leaking, use one of many available DNS leak testing websites that are available online.

  • First, you need to perform a DNS leak test. If your DNS is leaking, you might want to change it to Google DNS or get a VPN with its own DNS.

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