Why the Zero-Click Attack on Outlook Is a Game-Changer for Email Security


Microsoft confirmed a Zero-Click attack in Outlook (CVE-2023-23397) that would compromise the end user without them doing anything. Once the end user receives the email, the malicious code is delivered.

Why is this so bad for post-delivery API solutions? Because they can’t do anything about it. Milliseconds don’t matter—the vulnerability is triggered once Outlook processes the email. 

Download our white paper to learn the anatomy of this attack, why reactive Email Security solutions leave you exposed, and how Check Point does things differently...

The Avanan solution allows us to have a comprehensive email security solution that integrates seamlessly with our Office 365 environment while "staying enough out of the way" as to not hinder productivity.

— Infrastructure and Operations Analyst in Manufacturing