ELLIO is a cybersecurity company that provides threat intelligence focused on mass exploitation and reconnaissance activity. The company operates a global deception network and honeypots to collect first-party threat data, which it uses to power its platform and data products. Products and services offered include: - Threat Intelligence: Real-time data on mass exploitation and reconnaissance campaigns - Blocklist Automation: Centralized IP rule management for enterprise environments - IP Blocklists: Curated feeds of malicious IP addresses - Recon IP Lists: Datasets of scanner and reconnaissance IPs - rDNS Dataset: A complete set of IPv4 PTR records - ELLIO Platform: A unified interface for accessing threat intelligence, managing blocklists, and automating IP rules The platform integrates with SIEM and SOAR systems, enabling automated alert routing, prioritization, and response workflows. It also supports firewall protection use cases through centralized blocklist management, and provides attack surface reduction by blocking attackers during the reconnaissance phase before exploitation occurs. ELLIO also publishes free tools including an IP lookup service, network fingerprinting tools (MuonFP, JA4, JA3), and free threat datasets for researchers and academia. The company has released open-source tooling, including a TCP Fingerprint Firewall built on eBPF technology, introduced at Black Hat 2025. Target users include SOC teams, incident responders, threat hunters, and security engineers managing perimeter defense, vulnerability prioritization, and cloud protection. The company's founder, Vlad Iliushin, has served as President of AMTSO (Anti-Malware Testing Standards Organization).