・Security Software
Avira
https://www.avira.com/ja/free-antivirus-windows
simplewall
https://www.henrypp.org/product/simplewall
Spybot
https://www.safer-networking.org/products/spybot-free-edition/
SpywareBlaster
https://www.brightfort.com/spywareblaster.html
AppCheck
https://www.checkmal.com/product/appcheck/?lang=en

・Password Manager & Two-factor Authentication (2FA)
Bitwarden
https://bitwarden.com/
Authy
https://authy.com/download/
Authme
https://github.com/Levminer/authme/releases

・Sandbox Software
Sandboxie Plus & Classic
https://github.com/sandboxie-plus/Sandboxie/releases

・File Encryption Software
VeraCrypt
https://veracrypt.fr/
Cryptomator
https://cryptomator.org/