LevelBlue Chairman and CEO Robert McCullen. [Photo: LevelBlue]
LevelBlue, a Dallas-based global leader in cloud-based, AI-driven managed security services (MSS), has completed its acquisition of Trustwave, a global provider of cybersecurity and managed detection and response (MDR) leader.
LevelBlue was formerly known as AT&T Cybersecurity before its spinout as a standalone managed cybersecurity services business in May 2024.
The company said the acquisition establishes LevelBlue as “the world’s largest pure-play MSSP” with the broadest and most comprehensive portfolio of managed security, offensive security, strategic advisory, incident response, and security software.
Financial terms of the deal were not disclosed.
“The acquisition of Trustwave makes us the most complete cybersecurity partner in the industry,” LevelBlue Chairman and CEO Bob McCullen said in a statement. “We’re redefining what it means to be a managed security provider—combining world-class human expertise with AI-powered, platform-led services to give clients faster detection, smarter response, and long-lasting resilience against evolving threats. By uniting offensive and defensive strengths, we can deliver true defense in depth for enterprises, governments, and partners worldwide.”
What Trustwave brings to the table
LevelBlue said its acquisition ofTrustwave unites decades of leadership in MSS, MDR, incident response, and threat intelligence.
The combined company integrates LevelBlue’s expertise in network security, strategic risk management, and threat intelligence with Trustwave’s market-leading MDR powered by the Fusion Security Operations Platform, offensive security capabilities, and elite SpiderLabs threat intelligence team. LevelBlue said that together, they form a single, unified partner that simplifies operations, accelerates effective response, optimizes leading cyber technologies, and ensures cohesive protection across cloud, on-prem, and hybrid environments.
LevelBlue said its expanded intelligence ecosystem merges OTX, the world’s largest open threat-sharing platform, with the proprietary detection logic and advanced research capabilities of both LevelBlue Labs and Trustwave SpiderLabs, a unique combination that it said delivers exceptional situational awareness across the threat landscape, enabling faster detection, reduced alert fatigue, and more proactive threat mitigation throughout the security lifecycle.
Earlier this year, Trustwave became the first and only cybersecurity pure-play provider to achieve full authorized status under both the Federal Risk and Authorization Management Program (FedRAMP) and StateRAMP, LevelBlue said. Those credentials strengthen LevelBlue’s ability to serve the U.S. Department of Defense, the Defense Industrial Base, federal agencies, and state and local governments worldwide, providing streamlined procurement, compliance assurance, and mission-critical resilience for organizations that cannot afford downtime or exposure, the company said.
Part of a wave of acquisitions
In addition to acquiring Trustwave, LevelBlue recently announced the completion of its acquisition of Aon’s (NYSE: AON) Cybersecurity and Intellectual Property (IP) Litigation consulting groups, including the respected cybersecurity firms Stroz Friedberg and Elysium Digital.
“LevelBlue’s acquisition of Trustwave, on the heels of the Stroz Friedberg transaction, marks a pivotal moment in cybersecurity, delivering a very broad portfolio of capabilities among pure-play services providers,” Craig Robinson, IDC Research vice president for security services, said in a statement. “As cyber risks escalate, resilience is now mission-critical for enterprises and government agencies alike.
“IDC research shows that 36% of organizations are significantly increasing their cyber-resilience spending in 2025. This reality reflects security teams’ needs for increased cybersecurity maturity while simultaneously satisfying the C-Suite’s demands for increased resilience and uptime. LevelBlue’s full-featured suite of solutions, including MDR, AI-driven threat detection, incident response, offensive security, and strategic advisory, sets up organizations to shift from a reactive defense posture to proactive resilience at scale.”
The company said that the acquisitions are part of LevelBlue’s broader strategy to merge the industry’s strongest organizations and capabilities to deliver superior outcomes for clients.
LevelBlue said the strategic consolidations address a growing demand for more comprehensive, integrated, and adaptive cybersecurity solutions, positioning LevelBlue as the largest independent, pure-play MSSP globally.
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