• Update your browser whenever new patches are available. You can get more information on how to secure your browser here: A comprehensive guide to increasing the security and privacy of the browser.
• Update commonly used programs like Adobe Flash Player or Adobe Reader whenever new patches are available. Often, attackers exploit their security flaws to spread malware. With regular patches, these security flaws will be minimized.
• You can enable Click-to-Play Plugins. This will disable autoplaying of Flash or java-object. It won’t automatically run unless you click on it.
• You can use anti-malware like Malwarebytes Anti-Exploit. It can monitor your web browser and block potential malvertisements.
• Disable or uninstall browser plug-ins that you are not using anymore. This will prevent attackers from exploiting them.
• Keep your plug-ins up-to-date with recent security patches.

I hope this helps. Interested readers who want to know more about how different malware and cyberattacks work and how we can prevent them may want to refer to the book “A Guide To Cyber Security.”