Munich Re to Acquire Cyber Insurtech At-Bay for $575 Million

Munich Re announced on August 19, 2026 a definitive agreement to acquire At-Bay, a U.S.-based cyber insurance and managed detection and response (MDR) provider, for $575 million in enterprise value. At-Bay primarily serves small- to medium-sized enterprises and has developed into a top-10 U.S. cyber insurer, with gross written premiums totaling $278 million.

The Structure of the Deal

At-Bay will be overseen by Hartford Steam Boiler (HSB), part of Munich Re's Global Specialty Insurance business, which had already supported At-Bay's development into its current market position. Closing is subject to customary conditions, including required regulatory approvals, and is expected in the first quarter of 2027.

Why This Deal Signals a Market Shift

• The acquisition specifically combines traditional cyber insurance underwriting with At-Bay's proactive risk-mitigation technology platform — a deliberate bet that the cyber insurance market is moving from standalone coverage toward integrated, continuously managed risk mitigation
• Munich Re framed the deal as strengthening its position in a cyber insurance market evolving away from selling a policy alone toward bundling coverage with ongoing security monitoring and intervention
• At-Bay's specific focus on small and mid-sized enterprises addresses a segment often underserved by traditional cyber insurers, who have historically concentrated on larger enterprise accounts

What This Means If You're Evaluating Cyber Insurance

For small and mid-sized businesses currently shopping for cyber insurance, this acquisition is a useful signal that bundled insurance-plus-active-monitoring offerings are becoming a more mainstream, better-capitalized category rather than a niche approach — worth specifically asking any cyber insurance provider you're evaluating whether they offer (or plan to offer) integrated MDR-style monitoring alongside a policy, not just a payout in the event of a claim.