witnessing the magic (preagi)! 🪄 ~ opinions and posts are my own.
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Apple Security Updates released today (July 27 2026) support.apple.com/en-us/1001…
iOS 26.6 / iPadOS 26.6 - 87 CVEs
support.apple.com/en-us/1280…
macOS Tahoe 26.6 - 155 CVEs
support.apple.com/en-us/1280…
📲
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Apple is pushing security fixes ahead of schedule as AI shrinks the time threat actors need to weaponize known vulnerabilities reuters.com/business/apple-s…
iOS 26.5.2 and iPadOS 26.5.2 (support.apple.com/en-us/1275…)
37 new CVEs 👀 📲
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📲 Released today: “About the security content of iOS 26.5 and iPadOS 26.5”
support.apple.com/en-us/1271…
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deven retweeted
We evaluated an early version of Claude Mythos Preview for risk assessment during a limited window in March 2026. We estimated a 50%-time-horizon of at least 16hrs (95% CI 8.5hrs to 55hrs) on our task suite, at the upper end of what we can measure without new tasks.
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Current sci-fi timeline: Models learn to hide reasoning in RL. Safety observed this. OpenAI publishes. Next training ongoing (sees this).
And…we’re still early!
We recently found some instances of CoT grading during the training of previously deployed models after building a system that scans all OpenAI RL runs for accidental CoT grading.
We did not find clear evidence that these instances degraded CoT monitorability.
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About the security content of iOS 26.4.2 and iPadOS 26.4.2
support.apple.com/en-us/1270…
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Today: About the security content of iOS 26.4 and iPadOS 26.4
support.apple.com/en-us/1267…
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deven retweeted
🔺NEW: iPhone and iPad are now the first and only generally-available devices to meet the exacting security requirements for handling classified NATO information. apple.com/newsroom/2026/02/i…
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Today - About the security content of iOS 26.3 and iPadOS 26.3 (Feb 11 2026)
support.apple.com/en-us/1263…
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Today: About the security content of iOS 26.2 and iPadOS 26.2
support.apple.com/en-us/1258…
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📲 Today: About the security content of iOS 26.1 and iPadOS 26.1
support.apple.com/en-us/1256…
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“A major evolution of Apple Security Bounty, with the industry's top awards for the most advanced research”
security.apple.com/blog/appl…
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📲 Today: "About the security content of iOS 26.0.1 and iPadOS 26.0.1"
support.apple.com/en-us/1253…
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deven retweeted
We’re thrilled and honored to reveal our second keynote speaker: Ivan Krstić (@radian)
Any guesses what he might talk about? 😉
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📱Today: About the security content of iOS 26 and iPadOS 26 - support.apple.com/en-us/1251…
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deven retweeted
2026 Apple Security Research Device Application is now live. Apply at security.apple.com/research-…!
* Arbitrary code with arbitrary entitlements
* Arbitrary code injection into existing processes
* Arbitrary SPTM, TXM, KernelCache firmwares
* Downgrades to old builds
* ...and more
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