Advanced Cyber Defence Systems (ACDS) is a cybersecurity solutions provider specializing in External Attack Surface Management (EASM) and continuous threat detection. Its primary offering is the Observatory platform, which leverages AI for external asset discovery, vulnerability detection, and risk scoring. ACDS’s capabilities include misconfiguration and vulnerability identification, DRP, expired certificate discovery, and proactive monitoring of digital assets, focusing on mid-market and large enterprises with notable expertise in the UK’s government and retail sectors.