Malwarebytes is a free version of Malwarebytes real-time site antivirus software that helps you stop browser hijackers as well as other harmful content while surfing the Internet. It also blocks annoying ads, stops in-browser cryptocurrency miners (unwanted cryptocurrency mining), and kicks out other harmful content.

The extension is easy to use. There are no complicated configurations, and there are minimal notifications that interfere with browsing. It's the first and only browser extension that can detect and stop scams involving tech support, which are among the most common online threats. It also improves the display of websites and blocks trackers which monitor users and bombard them with annoying ads and assists in avoiding malware downloads by blocking sites known to contain it.

It doesn't have the additional features that are available in some of its rivals, like firewalls, system tune-up tools and a password manager or parental controls. In addition, it doesn't offer multi-year plans, like Bitdefender or Kaspersky which can save you money in the long run.