Founded in 2022, Advanced Cyber Defence Systems (ACDS) is headquartered in London, UK. ACDS’s Observatory is an EASM platform focused on identifying internet-facing assets, vulnerabilities, misconfigurations, exposed services, certificate issues, and software supply chain risks. ACDS has a national security-oriented background, with professionals from the UK and US, and has expanded its presence with offices in France and Singapore. Subscription pricing is tiered based on organizational size.