Outdated applications and OSes are magnets for malware, since they often have known vulnerabilities that can only be fixed by upgrading. If you see a new version is available, install it right away. Some platforms, such as Apple iOS, even allow you to automatically schedule security updates so you don’t miss a crucial change.

Update the security software, operating system, and web browser on all of your Internet-connected devices. Keeping your security software up to date will prevent attackers from taking advantage of known vulnerabilities. Use a tool like our PC Tune-up to keep your PC running like new.

Ransomware encrypts your files and demands payment for their decryption. It usually starts with a malicious link or attachment targeting vulnerability in outdated software. Don’t click these items if you don’t recognize them and/or if they were flagged by your security software. Also, never pay ransoms, since they don’t guarantee safe return.