ReliaQuest is a cybersecurity company that helps organizations detect, investigate, and respond to cyber threats across complex IT environments. Through its GreyMatter platform, ReliaQuest integrates data from existing security tools, providing unified visibility, advanced threat detection, and automated response capabilities.
The company partners with enterprises to improve security operations, reduce risk, and maximize the value of their current security investments—without requiring them to replace existing technologies. By combining software, automation, and human expertise, ReliaQuest enables security teams to work more efficiently, respond to threats faster, and stay ahead of an increasingly sophisticated threat landscape.
Brian Murphy
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Founder & CEO
Founded
2007
Partnered
2020
Headquarters
Tampa, FL
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ReliaQuest
News & Insights
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26 Dec 2025
Biggest Capital Raises in 2025 (Tampa Bay Business Journal)
Venture capital and private equity firms wrote hefty checks in 2025 to Tampa Bay companies. Here’s a look back at the biggest capital raises disclosed this year.
01 Apr 2025
ReliaQuest Raises $500M+ Funding at $3.4B Valuation
ReliaQuest, a Tampa, Florida-based AI-driven security operations platform for enterprises, has raised over $500 million in funding at a valuation of $3.4 billion.
31 Mar 2025
AI-Powered Cybersecurity Firm ReliaQuest Raises More Than $500 Million
ReliaQuest, a once-bootstrapped startup that uses artificial intelligence to automate cybersecurity detection and response, on Monday announced more than $500 million in funding.
02 Aug 2022
ReliaQuest and Digital Shadows – The Next Stage of the Journey
The acquisition of Digital Shadows by ReliaQuest has closed.
01 Jun 2022
ReliaQuest to Buy Digital Shadows for $160 Million
Cybersecurity company ReliaQuest LLC has agreed to buy threat intelligence specialist Digital Shadows Ltd. for $160 million, the companies said Wednesday.
26 Aug 2020
Our Investment in ReliaQuest
Cybersecurity remains a vexing challenge for most enterprises. Several factors complicate the mission of internal cybersecurity teams: a growing attack surface, a large number of security tools to manage, and a shortage of cybersecurity talent.
25 Aug 2020
ReliaQuest raises $300 million by simplifying cybersecurity
ReliaQuest has raised $300 million in new funding to accelerate product development and expand its go-to-market reach. The round underscores strong investor confidence in ReliaQuest's approach to solving critical security challenges.
25 Aug 2020
ReliaQuest Raises Over $300 Million in Growth Financing Led by KKR
ReliaQuest has raised $300 Million in new funding to accelerate product development and expand its go-to-market reach. The round underscores strong investor confidence in ReliaQuest's approach to solving critical security challenges.