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DEF CON 34 talks are here: 354 talks, summarized and searchable.

Browse DEF CON 34

August 2025 · Las Vegas, USA

BSides Las Vegas

8 sessions · 124 talks

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1–24 of 122 talks / 124

Breaking Ground·26 min

Junki Yuasa · Yoshiki Kitamura

Shows an open-source tool that automatically evaluates and hardens LLM system prompts against injection attacks.

aiopen-sourceapplication+2

Breaking Ground·43 min

  • BSides
  • Community
  • Date: Aug 2025
  • Location: Las Vegas

Allison Nixon

Traces how the hacker underground shifted from curious tinkering to exploitation, and what the industry should do about it.

threatsociallessons-learned+1

Breaking Ground·27 min

  • BSides
  • Community
  • Date: Aug 2025
  • Location: Las Vegas

Casey John Ellis

Argues that security needs knowledge sharing across generations, and offers practical ways to pass on hard-won experience.

lessons-learnedlearningteam+2