ReliaQuest has signed "A Call for Collective Action on Cyber Defense," an open letter joined by more than 100 industry leaders across security, technology, and AI. The letter is clear: "We have a limited window to strengthen cyber defenses." The central call is the one we built our platform, GreyMatter, around: "Put cyber-capable AI in the hands of defenders, starting with the teams protecting essential services."
The threat has gone agentic, “status quo security won’t be enough”
The letter emphasizes the urgency to strengthen cyber defenses:
"In the coming months, AI-enabled cyber attacks will become far more widespread and sophisticated as models around the world become increasingly capable."
We see this now. Attackers are using AI to gain speed, scale, and the ability to execute sophisticated attacks without deep expertise. The barrier to running a competent intrusion has dropped. Phishing that once took a skilled operator now takes a prompt. Reconnaissance, credential abuse, and lateral movement that once required time and talent now compress into hours.
That trajectory is not hypothetical. The capabilities on display in the Claude Mythos Preview disclosures show how far the compression has already gone, and how little expertise the next wave of attacks will require. Frontier models capable of this work are here, and the capability gap is closing across the industry rather than sitting with any single model.
The security operations model of the past was built for a slower adversary. Analysts triaged alerts one at a time, pivoted between consoles, and stitched context together by hand. That model does not scale to an attacker that operates at machine speed.
"Recognize that status quo security won't be enough."
Defenders need to prioritize AI cyber defense
The encouraging news is that the same technology reshaping the offense is available to the defense:
"AI brings specialist skills to more defenders and makes core security tasks faster, cheaper and better."
This is the core of ReliaQuest’s thesis. You defend AI with AI. The speed, scale, and lowered expertise barrier that attackers are exploiting are the same advantages defenders can claim—if the AI is built into how security operations actually run, not bolted on as another tool to manage.
Adding a chatbot to a SOC does not make the SOC agentic. Making defense agentic means AI carries the operational load across detection, containment, investigation, and response, working over the environment as it exists rather than a clean-room version of it.
ReliaQuest’s commitment to collective cyber defense
GreyMatter is the Agentic Defense for the enterprise. It sits across the tech stack and the processes security teams already run and makes every part of the defense agentic from one place. No rip-and-replace, and no requirement to consolidate onto a single vendor's tooling before you see value.
The mechanism comes down to multiple capabilities working together:
Operate on your existing telemetry. The Universal Translator normalizes data across tools using OCSF field mapping, so detection and response work across identity, endpoint, email, and network sources without forcing everything into one schema first.
Agentic teammates scale your team. Rather than surfacing an alert and waiting for a human to start investigating, GreyMatter's agentic teammates connect events across sources, assess risk, and drive the investigation forward—continuously, across the environment.
Act where the threat lives. GreyMatter applies detection at the source and in transit, to detect threats in seconds.
The result is measurable: detection in seconds, containment in under 5 minutes, at 99.4% accuracy across 1,300+ enterprises.
Humans Lead. AI Multiplies the Team.
"Put cyber-capable AI in the hands of defenders." Humans lead, operate, and control the AI. GreyMatter multiplies what the team can do.
This is how agentic defense earns trust in production. Analysts set the intent and the guardrails; the AI executes the repetitive, high-volume, time-critical work that a human team cannot do at machine speed. The people protecting an enterprise stay accountable for the decisions that matter, and they get their time back for the work that needs real judgment.
The teams protecting hospitals, utilities, and local governments are not short on expertise—they are increasingly short on time. Agentic defense gives even a small team the operational reach of a much larger one, with more speed and agility.
The Window is Open
The letter closes with a call to action:
"Fix the most dangerous weaknesses, verify the fixes, and share what works so others can build on it."
Collective defense only works if the capability reaches the defenders who need it, in the environments they already operate.
The opportunity is here. The defenders can pull ahead.
We signed the letter because we agree with the call for action. We built GreyMatter to be part of the solution.
Read the letter: https://openai.com/collective-cyberdefense/
