In a world where all of your personal data is stored on mobile and computer devices, it’s crucial to protect them from ransomware, malware and spyware that can steal or damage data. The top antivirus software is typically expensive and should you be careful if your budget isn’t so great or you want to protect many devices, you need to find a free alternative.

Bitdefender Antivirus Free will not slow down your system. Its antivirus engine, though advanced but lightweight on system resources and prevents ransomware attacks such as cryptocurrency theft, and modern „spearphishing“. It alerts you to unsecured setting on your system, like developer mode and alerts you to applications that can access data without your consent.

Another great alternative is Microsoft’s built-in Windows Defender, which can be found on nearly every device running the operating system, and does not require any action from you. It can update definitions automatically as well as block unknown software and file types. It also offers real-time security for your Windows PC.

Avast Security Free is the most reliable antivirus for Android. It’s a user-friendly program that detects malware and viruses on your phone, and monitors unsafe apps and settings and identifies suspicious calls and text messages. It also blocks websites that are phishing and comes with a GPS tracker in the event that you lose your phone. If someone tries to gain access to your phone three times, it will snap the photo and send it to you, along with the time and location.