The hacking world had a surprise this week.
DEF CON — one of the biggest and most respected cybersecurity conferences in the world — announced that three well-known tech figures are no longer allowed to attend its events. The reason? Their names appeared in recently released government documents connected to Jeffrey Epstein.
The three individuals now banned from DEF CON are Pablos Holman, Vincenzo Iozzo, and Joichi Ito.
Why DEF CON Made the Decision
According to conference organizers, the names of these individuals showed up in the U.S. Department of Justice’s latest document release related to its investigation into Epstein. DEF CON also pointed to reporting from Politico, which highlighted email exchanges between the three men and Epstein.
The conference didn’t accuse them of new crimes. Instead, it appears the decision was about reputation and community standards. DEF CON has always positioned itself as a place for trust, ethics, and open discussion in cybersecurity — and leadership likely felt pressure to act quickly.
Pushback From Iozzo’s Team
Not everyone agrees with the move.
A spokesperson for Vincenzo Iozzo told TechCrunch that the ban was “entirely performative.” The spokesperson also argued that Iozzo has barely attended DEF CON over the past 20 years, calling the decision a “rush to judgment.”
Iozzo has previously said that his interactions with Epstein were limited to business conversations about markets and emerging technologies. He has stated publicly that he never witnessed or participated in illegal activity.
At the time of reporting, representatives for DEF CON, Holman, and Ito had not provided additional comments.
A Wider Industry Reaction
What makes this situation more interesting is that DEF CON isn’t alone.
Major cybersecurity conferences such as Black Hat and Code Blue recently removed Iozzo from their advisory or review board listings after renewed attention on individuals who had contact with Epstein.
This suggests something bigger is happening inside the cybersecurity community — a broader effort to distance organizations from controversial figures, even if no new legal charges have been filed.
Background on the Individuals
Vincenzo Iozzo is a longtime cybersecurity professional and entrepreneur. He currently leads an identity-focused startup and previously sold a company to CrowdStrike, where he later held a leadership role.
Joichi Ito, meanwhile, previously led the MIT Media Lab. He stepped down in 2019 after it was revealed that he had financial connections to Epstein, despite knowing about Epstein’s prior conviction.
Pablos Holman, a venture capitalist and self-described technology futurist, was also reportedly in contact with Epstein for years. Emails released in past investigations suggest that Epstein once planned to attend DEF CON in 2013 alongside Holman. However, DEF CON founder Jeff Moss has said that, as far as he knows, Epstein never actually attended the conference.
Why This Matters
DEF CON isn’t just another tech event. It’s one of the most influential gatherings in cybersecurity, attracting thousands of hackers, researchers, and government officials every year. Being banned from it carries symbolic weight.
This situation also highlights how reputational risk now spreads quickly in the digital age. Even past associations — especially those tied to someone as controversial as Epstein — can resurface years later and trigger real professional consequences.
Whether more conferences or tech organizations will take similar steps remains to be seen. But one thing is clear: the cybersecurity world is paying close attention.
