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API security is becoming more important by the day and skilled practitioners are in high demand. Now’s the time to level up your API security skillset.  Wallarm University, our free training course, provides security analysts, engineers, and practitioners with hands-on skills you can’t get from documentation, videos, or traditional courses. Run real attacks, investigate real

Is an AI-to-AI attack scenario a science fiction possibility only for blockbusters like the Terminator series of movies? Well, maybe not! Researchers recently discovered that one AI agent can “inject malicious instructions into a conversation, hiding them among otherwise benign client requests and server responses.” While known AI threats involve tricking an agent with malicious

Lefteris Tzelepis, CISO at Steelmet /Viohalco Companies, was shaped by cybersecurity. From his early exposure to real-world attacks at the Greek Ministry of Defense to building and leading security programs inside complex enterprises, his career mirrors the evolution of the CISO role itself. Now a group CISO overseeing security across multiple organizations, Lefteris brings a

This is a predictions blog. We know, we know; everyone does them, and they can get a bit same-y. Chances are, you’re already bored with reading them. So, we’ve decided to do things a little bit differently this year.  Instead of bombarding you with just our own predictions, we’ve decided to cast the net far

The attack landscape has been dynamic following the disclosure of the React Server Components RCE vulnerability. New information has emerged regarding the initial Proof-of-Concept exploit, as well as improved detection methods, exploitation mechanics observed in the wild, and rapidly growing attack activity. This update summarizes the changes and observations we have made across Wallarm customers.

As the year draws to a close, it’s worth pausing to look back on what has been an extraordinary year for Wallarm and, more importantly, for the businesses we protect.  If 2024 was about laying the groundwork (tracking API sessions to understand behavioral attacks), then 2025 was the year we built upon that foundation, turning

On December 3, 2025, React maintainers disclosed a critical unauthenticated remote code execution (RCE) vulnerability in React Server Components (RSC), tracked as CVE-2025-55182. A working PoC was released publicly, and Wallarm immediately began observing widespread exploitation attempts across customer environments. What is CVE-2025-55182? CVE-2025-55182 is an unauthenticated remote code execution (RCE) vulnerability, rated CVSS 10.0,

The API supply chain is the new security blind spot. Attackers no longer need to breach your APIs directly; they can target the third-party services that connect to them. These unmanaged dependencies are now the shortest path to your sensitive data. The recent Mixpanel incident is a stark reminder of that fact.  What Happened During

Earlier this month, Microsoft uncovered SesameOp, a new backdoor malware that abuses the OpenAI Assistants API as a covert command-and-control (C2) channel. The discovery has drawn significant attention within the cybersecurity community. Security teams can no longer focus solely on endpoint malware. Attackers are weaponizing public and legitimate AI assistant APIs and defenders must adjust.