A2Secure

A2Secure is a Barcelona-based managed security services provider built around a co-managed model: it runs SOC/MDR detection and response, CISO-as-a-service, and a DPO office for clients rather than selling a standalone product. The company started in 2009 focused narrowly on PCI DSS work, acting as a Qualified Security Assessor for payment card compliance, and has since broadened into 24×7 threat monitoring, proactive threat hunting, and red-team engagements while keeping payments-sector compliance as a core specialty.

That PCI DSS heritage matters for scoring credibility: A2Secure holds direct Visa and Mastercard-recognized QSA certification, which is a real, independently verifiable technical bar rather than a marketing claim, and it has been named among Gartner’s roughly ten representative vendors in the Market Guide for Co-Managed Security Monitoring Services for two consecutive years. It has grown to around 120 employees and reports more than 200 international clients without ever raising outside venture funding, an unusually organic growth story for a security services firm at its scale.

A2Secure is best understood as a mid-market MSSP alternative to the large global SOC providers, particularly for organizations in payments, retail, and other regulated sectors that want compliance expertise bundled with monitoring rather than bought separately. Its differentiation is depth in a specific compliance niche plus a co-managed delivery model, not a proprietary detection engine or platform.