Sagar Tiwari

Sagar Tiwari is a versatile cybersecurity researcher, writer, and content creator recognized for his authoritative contributions to Open Source Intelligence (OSINT) and Threat Intelligence. His work, which explores the intersection of digital footprints and investigative journalism, has been featured in acclaimed magazines, top-tier news outlets, and respected research collectives. As the founder and lead of the elite CTF team Fs0ciety00, Sagar has spearheaded high-performance runs in international competitions, cementing the group’s reputation in the global offensive security community.

Sagar has presented his research at premier venues, including the SANS OSINT Summit (2023 & 2024), DEF CON (DC9111), Hacktivitycon 2025, and National Cyber Security Exercise (Bharat NCX 2025) and Cyber Sentinel Conclave 2025. He is a prominent fixture in the Indian security circuit, with appearances at BSides Mumbai (2025,2026), Dehradun (2025, 2026), Ahmedabad (2025), Agra (2026), and Vadodara (2026),as well as EOCON, and GrimmCon.

Further reflecting the global relevance of his work, Sagar’s research has been peer-reviewed and selected for presentation at an extensive list of international stages, including hack.lu, BSides Dublin (Trinity College), BSides Copenhagen, BSides Prague, BSides Sofia, BSides Cymru, BSides Krakow, COSAC 2025, and MY Hack 2025. He remains dedicated to advancing the OSINT field through both technical innovation and public education.