A3Sec

A3Sec, founded in 2012 in Madrid, provides managed security operations built around SIEM technology, originally emerging as a services partner built on AlienVault’s platform before expanding into a broader detection-and-response practice. The company runs 24/7 Security Operations Centers across Spain and Latin America, with offices in Madrid, Mexico City, Bogota, and Ecuador, and has organized its delivery model into five service lines: continuous exposure and attack surface management, a cyber telemetry engine for detection and response architecture, incident detection and containment, threat intelligence, and crisis management/incident response.

The company reports serving more than 270 clients across more than forty countries with a team exceeding 150 security professionals, and has continued to invest in regional SOC infrastructure, including a new "Augmented SOC" center in Mexico built around automation and AI-assisted analytics, backed by an initial $1 million investment. A3Sec’s public-sector and telecom-sector practice pages indicate meaningful focus on regulated industries and government clients, sectors that typically require formal compliance and audit rigor from their MSSP.

A3Sec operates as a privately-held services company without disclosed institutional venture funding, financing its growth through client revenue and direct investment in infrastructure like the Mexico SOC expansion. That model gives it a services-firm risk profile — more dependent on staffing and delivery consistency across SOCs than a product company would be — and independent, third-party validation of its detection efficacy (e.g., MITRE ATT&CK-style evaluation) was not found in public sources.