ReliaQuest Raises $500M to Revolutionize Cybersecurity with AI Innovations

ReliaQuest Raises $500M to Revolutionize Cybersecurity with AI Innovations

The short version

• ReliaQuest raised more than $500 million in a round led by EQT together with existing investors KKR and FTV Capital.
• The round valued the Tampa-based company at $3.4 billion and will fund AI-driven security automation and international growth.
• Annual recurring revenue has passed $300 million, growing more than 30% a year, and the company says it is profitable.
• Its GreyMatter platform connects to more than 200 security tools used by large enterprises.
• Ten Eleven Ventures and Finback Investment Partners also joined the round.

The funding

ReliaQuest said on March 31, 2025, that it had raised more than $500 million at a valuation of $3.4 billion. The round was led by new investor EQT Growth together with existing backers KKR and FTV Capital. KKR led ReliaQuest’s previous round in 2020. Since then the company says annual recurring revenue has grown more than fourfold.

Where the money goes

ReliaQuest sells security operations to large companies through its GreyMatter platform. GreyMatter plugs into a customer’s existing security tools and uses automation and AI agents to find threats and contain them. The new money goes into “agentic AI” automation. The idea is simple: take the routine investigation work off human analysts so they can spend their time on the cases that actually need judgment. An earlier version of this article included quotes attributed to an unnamed ReliaQuest spokesperson. We could not find them in the company’s announcement and have removed them.

Growing outside the U.S.

The round also pays for international expansion. ReliaQuest, based in Tampa, Florida, already has customers outside North America and plans to add staff and capacity abroad. A quote from an unnamed analyst about regional threats has been removed because we could not trace it.

Why investors are paying up

Investors have been eager to fund security companies that use AI to cut the workload in security operations centers. Alert queues are long. Vendors that can automate triage and response are growing fast, and ReliaQuest’s revenue growth helped it command a valuation more than triple its 2021 level, when it first passed $1 billion.

What comes next

With fresh capital and a profitable business, ReliaQuest is well placed to add products or buy smaller companies. For customers, the questions are practical. Will the automation actually cut response times? And will the company keep service quality as it expands? Buyers evaluating managed detection and response can ask for measured results, such as mean time to contain, rather than relying on the AI label.

Fred Templeton, CISA, CASP, SEC+

Fred Templeton is a practicing Information Systems Auditor in the Washington DC area. Fred works as a government contractor and uses his skills in cyber security to make our country's information systems safer from cyber threats. Fred holds a master's degree in cybersecurity and is currently working on his PHD in Information Systems.