Author Posts: Yaron Zinar

Security Advisory: Integer Overflow in Active Directory (CVE-2020-1267)

On July 14, 2020 Patch Tuesday, Microsoft released a patch for CVE-2020-1267, an important vulnerability in the Active Directory (AD)...

Maze Ransomware Analysis and Protection

Last month, Cognizant, the IT services giant, acknowledged it was a victim of a Maze ransomware attack. Maze ransomware is...

NTLM Reflection Attack? Not for Preempt Customers

NTLM strikes again! Microsoft released a patch this week, CVE-2019-1384, which addresses a bypass vulnerability that allows attackers to successfully...

Security Advisory: Targeting AD FS With External Brute-Force Attacks

On July 2019 Patch Tuesday, Microsoft released a patch for CVE-2019-1126, an important vulnerability discovered by Preempt Research Labs. The...

How to Easily Bypass EPA to Compromise any Web Server that Supports Windows Integrated Authentication

As announced in our recent security advisory, Preempt researchers discovered how to bypass the Enhanced Protection for Authentication (EPA) mechanism...