caseyjohnellis profile

Casey John Ellis

Tall Poppy Group
Founder, Tall Poppy Group · Founder @bugcrowd && @disclose_io | Hacker, Entrepreneur, Executive, Startup Advisor, Investor

Casey is a serial entrepreneur and cybersecurity executive, best known as the founder of Bugcrowd and co-founder of The disclose.io Project. With over 25 years in information security, Casey pioneered crowdsourced security as-a-service by launching Bugcrowd's first bug bounty program in 2012 and co-founded disclose.io to standardize vulnerability disclosures, officially launching it in 2018.

Currently, Casey serves as founder and advisor at Bugcrowd, President of The disclose.io Project, and advisor to various cybersecurity and AI startups. Starting his career in offensive security in the early 2000s, he founded the Tall Poppy Group in 2008, leading diverse cybersecurity initiatives bridging technical, business, and societal domains.

He has worked with global institutions, including the White House, U.S. Department of Defense, Department of Justice, DHS/CISA, and Australian and UK intelligence communities, significantly influencing cybersecurity policy, anti-hacking legislation, election security strategies, and AI governance.

Casey holds multiple patents, contributes to academic research, and frequently serves as a judge and keynote speaker at prominent cybersecurity conferences such as DEF CON, Black Hat, RSA Conference, and Techcrunch DISRUPT. He's extensively featured across major media outlets discussing cybersecurity, information warfare, and entrepreneurship.

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