Journalist - cyber/natn'l security. Speaker. Georgetown adjunct prof. Author - COUNTDOWN TO ZERO DAY: Stuxnet and the Launch of the World's First Digital Weapon Signal: KimZ.42 https://www.zetter-zeroday.comhttps://bsky.app/profile/kimzetter.bsky.socialhttps://bsky.app/profile/kimzetter.bsky.social/post/3mjxlzg2bn22s"An underrated 21st century skill is knowing what level of digital friendship you should have with somebody. Getting that Instagram request and being able to say, 'no, LinkedIn mutuals is right for us.'" [contains quote post or other embedded content]20 Apr 2026 23:16 +0000at://did:plc:mfam7sumoyb6lmiemlmhrwup/app.bsky.feed.post/3mjxlzg2bn22shttps://bsky.app/profile/kimzetter.bsky.social/post/3mjwhzg7gds2iInteresting backstory on how Anthropic discovered the power of Mythos to find vulnerabilities and decided, therefore, to control its release https://www.bloomberg.com/news/features/2026-04-16/how-anthropic-discovered-mythos-ai-was-too-dangerous-for-release20 Apr 2026 12:32 +0000at://did:plc:mfam7sumoyb6lmiemlmhrwup/app.bsky.feed.post/3mjwhzg7gds2ihttps://bsky.app/profile/kimzetter.bsky.social/post/3mj5x7fspec2i“when you change the internet settings in a router like they did, it propagates to all the devices in your house. All those devices now, once they’re connected to that Wi-Fi, are [going to] the malicious IP addresses [the GRU is] then routing their traffic through” https://cyberscoop.com/fbi-operation-masquerade-russian-gru-router-takedown-brett-leatherman/10 Apr 2026 18:27 +0000at://did:plc:mfam7sumoyb6lmiemlmhrwup/app.bsky.feed.post/3mj5x7fspec2ihttps://bsky.app/profile/kimzetter.bsky.social/post/3mj5di5k73s2vAs corrections go, "Solidly in my fuck-it era" as opposed to "solidly in my fucking era" is a doozy. But Brene Brown is pretty badass, so I can see how this would not have seemed out of place to the Financial Times writer who misheard it.10 Apr 2026 12:34 +0000at://did:plc:mfam7sumoyb6lmiemlmhrwup/app.bsky.feed.post/3mj5di5k73s2vhttps://bsky.app/profile/kimzetter.bsky.social/post/3mj3omizyl22dMy Kindle is apparently so old I never received an email from Amazon [contains quote post or other embedded content]09 Apr 2026 20:48 +0000at://did:plc:mfam7sumoyb6lmiemlmhrwup/app.bsky.feed.post/3mj3omizyl22dhttps://bsky.app/profile/kimzetter.bsky.social/post/3mj35rjxcvk2yFormer Trenchant exec who stole exploits from his employer and sold them to a Russian broker says he was suffering depression & money troubles when he decided to sell the exploits. New info also reveals the nature of the work he did for an Australian intel agency before joining Trenchant. My story: https://www.zetter-zeroday.com/trenchant-exec-says-he-had-depression-money-troubles-when-he-decided-to-sell-zero-days-to-russian-buyer-also-new-info-reveals-nature-of-his-work-for-australian-intelligence-agency/?ref=zero-day-newsletter09 Apr 2026 15:47 +0000at://did:plc:mfam7sumoyb6lmiemlmhrwup/app.bsky.feed.post/3mj35rjxcvk2yhttps://bsky.app/profile/kimzetter.bsky.social/post/3mitjtqzv3k2tLonely teens are making "friends" with role-playing chatbots. Some just use them as a game or entertainment, but others use them to explore "devious acts" and have erotic interactions with them. Some get attached to these alter egos. Parents are clueless. https://www.nytimes.com/2026/04/04/technology/ai-chatbots-teen-roleplay.html?unlocked_article_code=1.YlA.WHWI.IL_2s2hS3VfP&smid=url-share06 Apr 2026 15:02 +0000at://did:plc:mfam7sumoyb6lmiemlmhrwup/app.bsky.feed.post/3mitjtqzv3k2thttps://bsky.app/profile/kimzetter.bsky.social/post/3migsygtixc2oThey're not actually "reporters" if AI is doing the writing for them. Maybe call them content generators instead. https://www.wired.com/story/tech-reporters-using-ai-write-edit-stories/ https://www.wired.com/story/tech-reporters-using-ai-write-edit-stories/?_sp=19a54509-9d2d-4b08-8c95-92c1de861853.177499401177301 Apr 2026 13:41 +0000at://did:plc:mfam7sumoyb6lmiemlmhrwup/app.bsky.feed.post/3migsygtixc2ohttps://bsky.app/profile/kimzetter.bsky.social/post/3mhswfpfzfk2uGoogle has finally expanded on what its new disruptive cyber unit will do - it doesn't involve hacking back, as some had wondered. It's defensive-only in nature and involves, in part, doing what Microsoft has been doing for years - using court orders to take down threat actor infrastructure. [contains quote post or other embedded content]24 Mar 2026 15:49 +0000at://did:plc:mfam7sumoyb6lmiemlmhrwup/app.bsky.feed.post/3mhswfpfzfk2uhttps://bsky.app/profile/kimzetter.bsky.social/post/3mhb5nawcwc2pCourts generally weigh public interest in having depositions released against the deposed's interest in not being publicly embarrassed over what they said under oath. Public interest is high in this case. Interested in hearing from legal experts what chance they think gov has in getting these sealed [contains quote post or other embedded content]17 Mar 2026 14:10 +0000at://did:plc:mfam7sumoyb6lmiemlmhrwup/app.bsky.feed.post/3mhb5nawcwc2phttps://bsky.app/profile/kimzetter.bsky.social/post/3mh6occqe722mGamblers on Polymarket threatened Israeli journalist if he didn't change a report about a missile that bypassed interceptors and struck an open area outside Jerusalem. Also, an Israeli reservist and civilian were indicted for using classified info to make bets before Israel bombed Iran last June https://www.timesofisrael.com/gamblers-trying-to-win-a-bet-on-polymarket-are-vowing-to-kill-me-if-i-dont-rewrite-an-iran-missile-story/16 Mar 2026 14:30 +0000at://did:plc:mfam7sumoyb6lmiemlmhrwup/app.bsky.feed.post/3mh6occqe722mhttps://bsky.app/profile/kimzetter.bsky.social/post/3mgsru4ad522yJust glanced at the clock thinking it's 1pm and the clock says 5pm. Welp. So much for my plan for the day.11 Mar 2026 21:02 +0000at://did:plc:mfam7sumoyb6lmiemlmhrwup/app.bsky.feed.post/3mgsru4ad522y