Censys, Ten Years later: An Introduction

**Executive Summary:** This retrospective blog describes Censys's ten-year evolution into a comprehensive Internet-scanning platform that now probes 200+ protocols across all ports, tracks IPv4/IPv6 and name-based properties, and extracts durable features to improve visibility and accuracy; it highlights growth metrics, accuracy estimates versus other scanners, and common use cases such as attack surface management, threat hunting, supply-chain and cyberinsurance assessments, critical infrastructure protection, and fraud/impersonation detection used by researchers, industry, and government.