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Stay up-to-date on the latest cybersecurity topics and security operations thought leadership from ReliaQuest experts.
Site URL: reliaquest.com/
Feed URL: reliaquest.com/rss.xml#pr0nz
Posts: 3
Followers: 1
One Blank Field Bypasses Direct Send Control
https://reliaquest.com/blog/threat-spotlight-one-blank-field-bypasses-direct-send-control/
Published: September 3, 2026 10:00
ReliaQuest observed that an empty Simple Mail Transfer Protocol (SMTP) envelope sender can bypass RejectDirectSend, a Microsoft 365 control in Exchange Online intended to block unauthenticated Direct Send emails from an organization’s domain.
Your Security Vendor May Not Be Telling You the Truth About Your MTTD – Here's Why
Published: September 1, 2026 04:00
If MTTD is measured inaccurately, what separates a meaningful metric from a misleading one? The first minutes of an attack hold the answer.
Gryxa: The AI-Built Toolkit That Watches How You Remove It
https://reliaquest.com/blog/threat-spotlight-gryxa-ai-built-toolkit/
Published: August 28, 2026 18:00
ReliaQuest identified a new toolkit, "Gryxa," highly likely used by a financially motivated threat actor to run an initial-access operation.