Yes, there are some quality free internet security programs — though they have some shortcomings compared to their paid alternatives. Bitdefender is a great antivirus with a free version. It focuses on using its advanced malware engine to protect against real-time malware threats as well as scanning for those already on your device. However, Bitdefender's free version is missing the advanced ransomware protection of its paid plans, as well as its webcam and microphone monitor, safe banking, password manager, and much more.