Engineering a secure digital future.
Legacy Technologies designs, builds and defends the critical infrastructure that powers the modern economy - from next-generation data centers and intelligent energy systems to business process digitalization and the ARX continuous attack-surface management platform.

Total protection.
Engineered resilience.
ARX is Legacy Technologies' flagship cybersecurity platform - a Continuous Attack-Surface Management solution that discovers internet-facing assets, actively tests them for exploitable vulnerabilities and delivers scored, attributable findings, so teams see what an attacker could actually reach.
Learn more about ARXEngineering Excellence
Multidisciplinary teams delivering reference-grade systems from concept to commissioning.
Uncompromising Cybersecurity
Zero-trust by default, with continuous assurance built into every layer of the stack.
Sustainable Infrastructure
Energy-aware design that turns resilience and efficiency into long-term business value.
Advanced engineering & resilient infrastructure.
The engineering partner for the next industrial era.
Legacy Technologies is a leading IT consulting and engineering firm driving industrial and digital transformation for operators of mission-critical infrastructure. Working through a curated network of strategic engineering partners, we deliver the full capability stack across three technical pillars - next-generation data centers, intelligent energy systems and business process digitalization - hardened by the ARX cybersecurity platform.