Our Youtube AV/Antimalware tester buddy Leo at TPSC (The PC Security Channel) proceeds to test a Win10 system against his standard gauntlet of 1500+ recent malware samples, a nice test in light of many touting and quoting Defender's recent 100% success/detection rate in blocking access to harmful URLs, high detection rates in tests, etc...
Hint/SUmmary: Alas, it does NOT go very well for Defender.....
View: https://www.youtube.com/watch?v=sE-xdb9hTqY
In Defender's defense, it did detect/block 90% of the exploits/harmful apps....just prior to the system being 'overdosed' on the remaining 10% and ultimately succumbing to ransomware, etc...
Granted, this is a test of Defender's ability to block/recover from hostile applications from being run/executed by the user....(it's still possible the Defender browser extension, if employed, might have prevented ever downloading the junk to start with, but, this was not that kind of test)
Hint/SUmmary: Alas, it does NOT go very well for Defender.....
In Defender's defense, it did detect/block 90% of the exploits/harmful apps....just prior to the system being 'overdosed' on the remaining 10% and ultimately succumbing to ransomware, etc...
Granted, this is a test of Defender's ability to block/recover from hostile applications from being run/executed by the user....(it's still possible the Defender browser extension, if employed, might have prevented ever downloading the junk to start with, but, this was not that kind of test)