Tonic Security, a cybersecurity firm, has raised $7m in seed funding to accelerate its mission to redefine how organisations manage cyber risk.
The company, based in the US and led by experienced cyber professionals, is tackling one of the most persistent challenges facing security teams today—prioritising and resolving the most critical threats in an increasingly noisy digital environment.
The seed round was led by Hetz Ventures, with participation from Vesey Ventures and a group of well-known angel investors from the cybersecurity sector.
Tonic Security has developed an AI-powered Exposure Management Platform designed to harmonise data across fragmented IT and security systems. The platform introduces much-needed context to findings from multiple sources—such as threat intelligence feeds, internal documents, tickets and emails—allowing teams to quickly understand the true business impact of a vulnerability. By combining its proprietary Data Fabric with domain-specific AI agents, Tonic gives defenders the tools they need to pre-empt attacks rather than react to them.
The fresh funding will support Tonic’s efforts to scale its technology and onboard more enterprise clients. The company aims to enhance product development, expand go-to-market operations and continue its mission to arm security teams with intelligent, business-aligned tools for reducing exposure windows and alert fatigue.
Customers already using the platform are reporting significant results. Tonic claims a 50% decrease in Mean Time to Remediate (MTTR) for critical exposures, a 20% drop in time spent contextualising alerts, and a 90% reduction in exposures needing remediation. The company has also drawn interest from global enterprises, including Fortune 500 companies, seeking to streamline security operations and eliminate reliance on manual, homegrown processes.
Tonic Security CIO and CISO of the United States Senate Federal Credit Union Mark Fournier said, “It used to take days to identify an exposed asset and understand the potential risk to the business if exploited. With Tonic it takes minutes.”
Hetz Ventures general partner Pavel Livshitz said, “Security teams are drowning in data but starving for context. What stood out with Tonic is their ability to surface what actually matters to the business by applying AI in a pragmatic and operational way. Tonic helps organisations move from reactive firefighting to intelligent preemption. That’s the kind of innovative thinking we back.”
Tonic’s founding team brings extensive expertise from leading cyber defence institutions. CEO Sharon Isaaci and CPO David Warshavski previously held senior roles at Sygnia, a top-tier incident response and consulting firm, while CTO Greg Ainbinder served in Israel’s elite intelligence unit 8200, where he led the AI and Secure Cloud Center.
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