macOS 27.3 Includes an Important Security Fix

The first macOS 27.3 developer beta includes an important security fix that prevents command-line tools from accepting eMudhra's compromised web certificates. Specifically, the update removes the affected certificates from the /etc/ssl/cert.pem file. macOS 27.3 is not expected to be released to the public until December, but a macOS 27.2.1 update will likely arrive sooner with the same security fix. If you do not wish to update your Mac at this time, you can opt to manually remove the affected certificates from your computer's /etc/ssl/cert.pem file by following the instructions outlined in Apple's support document related to this matter. If you do not use command-line tools via Terminal or similar, you are already fully protected. Apple said it has been blocking eMudhra's compromised TLS web certificates since October 19 in Safari, Mail, and other apps that use Apple's networking and security frameworks, across all of its software platforms. The certificates are blocked automatically with no software update required, so most users do not need to take any action. This all comes after a security researcher last month discovered that private cryptographic keys associated with eight of Indian company eMudhra's intermediate certificate authority (CA) certificates were weak. The compromised keys could have allowed attackers to impersonate legitimate websites, potentially putting users' sensitive information at risk. So far, no evidence has surfaced that indicates the keys were exploited maliciously. Popular StoriesmacOS 27.2 Adds Touch Gestures Ahead of MacBook UltraMonday October 5, 2026 2:14 pm PDT by Juli ClovermacOS Golden Gate 27.2 adds code referencing new touch-specific gestures in apps like Safari, Notes, Photos, and Quick Look, a possible sign Apple is preparing to release the rumored OLED touchscreen MacBook, possibly called the "MacBook Ultra." Code in the latest beta adds new gesture recognition tools to several Apple apps. Safari gets a touch sentinel recognizer, Photos has...Apple Releases macOS Golden Gate 27.2Monday October 26, 2026 10:48 am PDT by Juli CloverApple today released macOS Golden Gate 27.2, the first major update to the macOS 27 operating system that launched in September. Mac users can download macOS Golden Gate 27.2 by opening up the System Settings app and using the Software Update option. macOS Golden Gate 27.2 overhauls the brightness and volume sliders, plus it expands Siri AI to new languages including French, Japanese,...macOS 27.2 Stops Upgrades From Removing RosettaUpgrading to macOS 27 no longer removes an existing Rosetta installation, according to Apple's enterprise release notes for macOS 27.2. Previously, upgrading to macOS 27 removed existing installations of Rosetta, the translation tool that lets Intel-based apps run on Apple silicon Macs. macOS 27 remains the final release with full Rosetta support. Apple plans to phase out general-purpose...