>>1
Defenderの検知能力はカスだからおすすめしない

ファイル暗号化型ランサムウエア28種類のテスト
https://avlab.pl/sites/default/files/68files/ENG_2016_ransomware.pdf

検知しファイル暗号化を防げた数/ランサムウエアの種類

感染数0
28/28 Arcabit Internet Security
28/28 Comodo Cloud Antivirus
28/28 Emsisoft Internet Security 11
28/28 Emsisoft Internet Security 12
28/28 Foltyn SecurityShield
28/28 F-Secure SAFE
28/28 G DATA Internet Security
28/28 Kaspersky Internet Security 2017
28/28 Qihoo 360 Total Security
28/28 SecureAPlus Premium
28/28 Trend Micro Internet Security 2017
28/28 Voodoo Shield Pro
28/28 Zemana Antimalware Premium
28/28 ZoneAlarm Internet Security Suite

感染数1
27/28 Avast Internet Security 2016
27/28 Avira Internet Security Suite
27/28 Bitdefender Antivirus Free Edition
27/28 Bitdefender Internet Security 2017
27/28 Dr. Web Space Security
27/28 ESET Smart Security 10 (BETA)
27/28 TrustPort Internet Security