--- title: Best Fireship posts — August 2026 | daily.dev description: The most upvoted Fireship posts from August 2026, curated by the daily.dev community. canonical: https://daily.dev/sources/fireship/best-of/2026/08 twitter:card: summary_large_image twitter:site: @dailydotdev og:url: https://daily.dev/sources/fireship/best-of/2026/08 og:type: website og:site_name: daily.dev og:title: Best Fireship posts — August 2026 | daily.dev og:description: The most upvoted Fireship posts from August 2026, curated by the daily.dev community. og:image: https://media.daily.dev/image/upload/s--VAY5ToZt--/f_auto/v1724209435/public/daily.dev%20-%20open%20graph --- # Best of Fireship — August 2026 1. 1 [](https://daily.dev/posts/the-most-expensive-software-bug-in-history--hzcwbafwp "The most expensive software bug in history...") Video Fireship·1w The most expensive software bug in history... A retrospective on the 2012 Knight Capital trading disaster, where a reused, undeleted feature flag in the SMARS trading system caused one of eight servers to run a dormant test function called Power Peg during a live deployment. Because deployment was manual and incomplete, the bug went unnoticed for 45 minutes, executing 4 million trades and losing the firm $440 million, leading to its acquisition within months. The story is framed as a cautionary tale about deployment practices, dead code, and technical debt, tying it loosely to modern software and AI-related incidents. The video ends with a sponsored pitch for an AI agent tool aimed at open-source maintainers. 62 4 2. 2 [](https://daily.dev/posts/the-safest-way-to-store-bitcoin-just-lost-115-million--yyej5mkgj "The safest way to store Bitcoin just lost $115 million...") Video Fireship·4w The safest way to store Bitcoin just lost $115 million... A critical vulnerability in ColdCard Bitcoin hardware wallets led to the theft of over 1,600 Bitcoin (\~$115 million) from more than 7,000 wallets. The root cause was a subtle firmware bug: ColdCard's MicroPython-based firmware had two random number generators with the same function name. A flag intended to disable MicroPython's weak built-in RNG was set to zero rather than being undefined, causing an 'if not defined' check to pass and the weak RNG to be used instead of ColdCard's secure one. On bare metal hardware with no OS, MicroPython's RNG fell back to deterministic inputs — the chip serial number and a timer — making seed phrases brute-forceable. Attackers looped through all possible serial/timer combinations to derive private keys and drain wallets. Victims attempting to rescue funds faced a mempool race where attackers could front-run their transactions with higher fees; the only workaround was sending rescue transactions directly to mining pools to bypass the public mempool entirely. 38 9 [See all Fireship archives](/sources/fireship/best-of) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@graph":[{"@type":"CollectionPage","@id":"https://daily.dev/sources/fireship/best-of/2026/08#page","url":"https://daily.dev/sources/fireship/best-of/2026/08","name":"Best Fireship Posts — August 2026","description":"The most upvoted Fireship posts from August 2026, curated by the daily.dev community.","isPartOf":{"@type":"WebSite","url":"https://daily.dev"}},{"@type":"ItemList","@id":"https://daily.dev/sources/fireship/best-of/2026/08#items","numberOfItems":2,"itemListElement":[{"@type":"ListItem","position":1,"url":"https://daily.dev/posts/the-most-expensive-software-bug-in-history--hzcwbafwp","name":"The most expensive software bug in history..."},{"@type":"ListItem","position":2,"url":"https://daily.dev/posts/the-safest-way-to-store-bitcoin-just-lost-115-million--yyej5mkgj","name":"The safest way to store Bitcoin just lost $115 million..."}]},{"@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Sources","item":"https://daily.dev/sources"},{"@type":"ListItem","position":3,"name":"Fireship","item":"https://daily.dev/sources/fireship"},{"@type":"ListItem","position":4,"name":"Best of","item":"https://daily.dev/sources/fireship/best-of"},{"@type":"ListItem","position":5,"name":"August 2026"}]}]} ```