Quoting Bobby Holley

Simon Willison’s Weblog Subscribe Sponsored by: Honeycomb — AI agents behave unpredictably. Get the context you need to debug what actually happened. Read the blog As part of our continued collaboration with Anthropic, we had the opportunity to apply an early version of Claude Mythos Preview to Firefox. This week’s release of Firefox 150 includes fixes for 271 vulnerabilities identified during this initial evaluation. [...] Our experience is a hopeful one for teams who shake off the vertigo and get to work. You may need to reprioritize everything else to bring relentless and single-minded focus to the task, but there is light at the end of the tunnel. We are extremely proud of how our team rose to meet this challenge, and others will too. Our work isn’t finished, but we’ve turned the corner and can glimpse a future much better than just keeping up. Defenders finally have a chance to win, decisively. — Bobby Holley, CTO, Firefox Posted 22nd April 2026 at 5:40 am Recent articles Is Claude Code going to cost $100/month? Probably not - it's all very confusing - 22nd April 2026 Where's the raccoon with the ham radio? (ChatGPT Images 2.0) - 21st April 2026 Changes in the system prompt between Claude Opus 4.6 and 4.7 - 18th April 2026 This is a quotation collected by Simon Willison, posted on 22nd April 2026. firefox 91 mozilla 115 security 598 ai 1976 generative-ai 1752 llms 1719 anthropic 275 claude 271 ai-security-research 15 Disclosures Colophon © 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026