Cybersecurity M&A Roundup: 30 Deals Announced in December 2025

Cybersecurity M&A in December 2025 saw 30 deals announced, with eight pure-play acquisitions exceeding $1 billion, and SecurityWeek noting the year saw more than 420 deals catalogued in 2025. Akamai announced the acquisition of Fermyon, a serverless cloud provider, to combine Wasm-based functions with its edge platform. Checkmarx moved to acquire Tromzo to bolster its application security offerings, while Integrity360 bought Cresco and Redshift to strengthen its European and African security services footprint.

Outpost24 announced it would acquire Infinipoint, expanding its zero-trust and identity security capabilities, and Red Hat acquired Chatterbox Labs to add AI safety testing and guardrails. ServiceNow agreed to acquire Armis for $7.75 billion in cash and also to buy Veza for about $1 billion, aiming to extend its security and risk portfolios, and Silent Push acquired HYAS to enhance threat intelligence and protective DNS capabilities.