Eyal Pfeifel
CTO at HUMAN Security
Pfeifel is known for engineering the large-scale machine learning and real-time decisioning infrastructure at HUMAN Security that detects and neutralizes sophisticated bot fraud, making him one of the most technically impactful figures in the fight against invalid traffic in digital advertising.
Last updated Jun 11, 2026 by ATDb automated enrichment
Eyal Pfeifel is best known as the Chief Technology Officer of HUMAN Security (formerly White Ops), where he leads the engineering and technical strategy behind one of the most sophisticated bot detection and ad fraud prevention platforms in the world. His work sits at the critical intersection of cybersecurity and AdTech, overseeing systems that verify the humanity of billions of digital interactions daily — protecting advertisers, publishers, and platforms from invalid traffic (IVT), click fraud, and increasingly complex bot-driven fraud operations that cost the digital advertising industry an estimated $80+ billion annually. Pfeifel has been a key technical architect behind HUMAN's expansion of its threat intelligence and verification capabilities, applying large-scale machine learning, real-time decisioning, and behavioral analytics to detect and neutralize fraud at internet scale. His engineering leadership has contributed directly to some of the most significant bot fraud takedowns in industry history, reinforcing HUMAN's reputation as a trusted partner to the world's largest advertising platforms, DSPs, SSPs, and brand advertisers. His work has helped define what enterprise-grade bot mitigation looks like in the modern programmatic ecosystem. Before his current role, Pfeifel held senior technical positions that built his expertise in machine learning and large-scale distributed systems. He co-founded Impera, an AI and machine learning company, which was acquired and helped form the foundation of his deep technical background in applied AI. His trajectory reflects a broader trend of cybersecurity and AI expertise converging within AdTech, where the sophistication of fraud operations increasingly demands the same caliber of technical response.
Co-Founder & CTO
Impera (2013-2017)
VP of Machine Learning
HUMAN Security (White Ops) (2017-2020)
- B.Sc., Computer Science, Technion – Israel Institute of Technology
- Technical leadership behind HUMAN Security's bot mitigation platform protecting billions of digital interactions daily across global advertising and marketing ecosystems
- Contributed to major industry botnet takedown operations coordinated by HUMAN Security, including actions against sophisticated ad fraud botnets
- Co-founded Impera, an AI/ML company whose technology and team were integrated into HUMAN Security's core detection infrastructure
- Helped guide HUMAN Security's technical evolution through its rebrand from White Ops in 2021 and subsequent platform expansion