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This is a recap of the top 10 posts on Hacker News on Sep 7, 2025.(00:00) - Intro (00:18) - Show HN: I recreated Windows XP as my portfolio (01:28) - We hacked Burger King: How auth bypass led to drive-thru audio surveillance (02:40) - How the “Kim” dump exposed North Korea's credential theft playbook (03:52) - A Navajo weaving of an integrated circuit: the 555 timer (05:08) - Over 80% of sunscreen performed below their labelled efficacy (2020) (06:24) - Show HN: I'm making an open-source platform for learning Japanese (07:27) - Oldest recorded transaction (08:43) - Stop writing CLI validation. Parse it right the first time (10:01) - The World War Two bomber that cost more than the atomic bomb (11:15) - RFC 3339 vs. ISO 8601 (12:28) - Outro Show HN: I recreated Windows XP as my portfoliohttps://mitchivin.com/https://news.ycombinator.com/item?id=45154609We hacked Burger King: How auth bypass led to drive-thru audio surveillancehttps://bobdahacker.com/blog/rbi-hacked-drive-thrus/https://news.ycombinator.com/item?id=45148944How the “Kim” dump exposed North Korea's credential theft playbookhttps://dti.domaintools.com/inside-the-kimsuky-leak-how-the-kim-dump-exposed-north-koreas-credential-theft-playbook/https://news.ycombinator.com/item?id=45152066A Navajo weaving of an integrated circuit: the 555 timerhttps://www.righto.com/2025/09/marilou-schultz-navajo-555-weaving.htmlhttps://news.ycombinator.com/item?id=45152779Over 80% of sunscreen performed below their labelled efficacy (2020)https://www.consumer.org.hk/en/press-release/528-sunscreen-testhttps://news.ycombinator.com/item?id=45152374Show HN: I'm making an open-source platform for learning Japanesehttps://kanadojo.comhttps://news.ycombinator.com/item?id=45152940Oldest recorded transactionhttps://avi.im/blag/2025/oldest-txn/https://news.ycombinator.com/item?id=45149626Stop writing CLI validation. Parse it right the first timehttps://hackers.pub/@hongminhee/2025/stop-writing-cli-validation-parse-it-right-the-first-timehttps://news.ycombinator.com/item?id=45151622The World War Two bomber that cost more than the atomic bombhttps://www.bbc.com/future/article/20250829-the-bomber-that-became-ww2s-most-expensive-weaponhttps://news.ycombinator.com/item?id=45109927RFC 3339 vs. ISO 8601https://ijmacd.github.io/rfc3339-iso8601/https://news.ycombinator.com/item?id=45155179 What is Hacker News Highlights? Daily overview of the Top 10 Hacker News posts. Post and comment summarization by AI.