Marina Segal: Your Cloud's Refusal to Say No
October 13, 2026 - 8:35 pm
By Tamnoon CEO Marina Segal
Cloud Security
Marina Segal, a veteran in the field, helped develop the machines responsible for comprehensive cloud security. She played a pivotal role in defining cloud security posture management at Dome9 Security and later at Check Point after its acquisition. Today, thanks to these technologies, misconfigurations, open ports, and over-permissioned roles are readily detected within minutes in any cloud environment.
Yet, Segal argues that these findings often go unaddressed. She notes that over half of all previously detected cloud security issues remain unresolved.
"Nothing happened to them," she states. "We built an industry that could see every problem in the cloud, and then we filed the problems."
The Gap in Cloud Remediation
CrowdStrike's data highlights the growing challenge: attackers gain a foothold in just 29 minutes, while defenders take months to respond after an alert is triggered. This significant remediation backlog led to a surge in automation within the cloud security industry.
Most automated solutions, however, only offer to make changes, rarely refusing them. Segal believes this is a critical flaw:
"Every vendor in this market is selling speed. Speed was never the problem. Nobody was ever afraid the fix would be slow. They were afraid it would be wrong, and that they would be the one who said yes to it."
Tamnoon: A Different Approach
Tamnoon, co-founded by Segal in 2021, takes a unique approach. Instead of automatically fixing everything, its machine learns to say no.
Traditional remediation tools are designed to act, while Tamnoon's engine focuses on decision-making. It analyzes dependencies, ownership, recent changes, and traffic patterns before refusing a change it deems unsafe and explaining its reasoning.
"A machine learns to act long before it learns when to stop," Segal emphasizes. "We taught ours in the other order. The first thing we automated was restraint."