ZoneAlarm Basic Firewall is a basic and great firewall that can easily work for internet users and it can easily stop the cyber attacks. I have used this and found it very useful and gives the facility to protect you from both inbound and outbound attacks.
COMODO Internet Security - Download Free Internet Security Software for Complete protection against viruses and attacks of your computers. Know what's new in Comodo Internet Security.
ESET NOD32 Antivirus - Best IT security solutions for your home and business devices. Try ESET antivirus and internet security solutions for Windows, Android, Mac or Linux OS.
AVG Internet Security - Stay safe online. AVG Internet Security gives you advanced protection against viruses, ransomware and other threats โ for all your devices. Try it for free!
G Data InternetSecurity - Ransomware steals your memories. For example your photos. We protect you!
Windows Defender - Windows 10 security delivers built-in & ongoing protections you can trust: Windows Defender Antivirus, firewall, family settings, ransomware protection, real-time protection & more. Stay up to date & protected at no extra cost.
Avira Internet Security - Avira Internet Security Suite is a one-size-fits-all security solution for your online life.