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Day[0]

Hosted by Specter & zi

A finished archive of 283 episodes on how real vulnerabilities were found and exploited.

Panel Completed series 60+ min· ~283 episodes· Started 2019
Level
Expert, assumes deep technical background
Status
Ended, last episode
Who's behind it
Independent, dayzerosec sourceEnded in April 2026 after 283 episodes.
Last verified
No transcripts

Listed underAppSecOffensive security

Apple PodcastsSpotifyYouTubeRSS Show website

Editorial take

Day[0] has ended, and its archive is still the best audio resource on exploit development. From 2019 to 2025 the dayzerosec researchers Specter (kernel and console exploitation) and zi (formerly a Security Innovation consultant) read the week's disclosed vulnerabilities and explained the root cause and the exploitation path, from Chrome and Linux kernel bugs to hypervisor escapes and bug bounty web flaws. For a while they split into separate [bounty] and [binary] episodes, which makes it easy to pick a lane. The show stopped regularly in May 2025 and a final episode, "The Future", aired in April 2026. Treat it as a back catalog: the specific bugs are dated, but the reasoning about mitigations, memory safety, and methodology holds up. Each episode page on dayzerosec.com links the write-ups discussed.

Last hand-checked 2026-09-30, Show ended: final episode (283) published 2026-04-10; regular episodes stopped in May 2025.

Listen if you …

  • are learning exploit development or vulnerability research and want worked examples
  • do bug bounty and want to understand the binary side as well as the web side
  • like reading the original write-ups after hearing a researcher's explanation

Skip if you …

  • you want current news, the show ended in 2026 and covers bugs disclosed through early 2025
  • you have no programming or memory corruption background, the binary episodes assume both

Start with these 3 episodes

  1. 01

    [discussion] A Retrospective and Future Look Into DAY[0]

    · 64 min · Practitioner

    The hosts explain how the show worked and how they read research, which helps you pick episodes from the archive.

  2. 02

    Memory Corruption: Best Tackled with Mitigations or Safe-Languages

    · 58 min · Expert

    An evergreen debate on memory-safe rewrites versus mitigations, by people who exploit both.

  3. 03

    The Future

    · 80 min · Expert

    The final episode: where the hosts think vulnerability research and exploit development are heading.

About the show

Day[0] was a weekly podcast from dayzerosec for bug bounty hunters, exploit developers, and anyone interested in the details of newly disclosed vulnerabilities. It was hosted by Specter and zi, and ran 283 episodes from March 2019 to April 2026.

Episodes walked through recent vulnerability write-ups, with links and summaries on each episode page at dayzerosec.com. From 2023 to early 2024 the show was split into [bounty] episodes on web and application bugs and [binary] episodes on memory corruption and exploitation. Regular episodes stopped in May 2025; a final discussion episode was published on 2026-04-10.

Notable guests

  • John Carse

Pairs with

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