There are two ways attacks from hackers can be executed when it comes to your web browser (Internet Explorer, Firefox, Chrome, Safari, Opera, etc.). One is the through vulnerabilities in the browser itself and the other one is through the vulnerabilities in the plug-ins your browser uses. To minimize how vulnerable they both are, it’s recommended to keep them up-to-date to their latest version which includes all the patches for different exploits.
Here’s a tool to check the plug-ins your web browser has installed and see if they need to be updated or not, PLUS the web browser itself. Click on the below link and then in the landing page click on “Install Plug-in” and follow the directions. Once the plug-in is installed, click on “Scan Now”. You’ll see if your browser is not up-to-date and which plug-ins need newer versions and links to the respective websites to update them all. Repeat for all web browsers you have installed, if you use more than one: