Apple Releases Security Update 2011-005 for OS X to Address Compromised Certificates

Apple today released Security Update 2011-005 for OS X, a small update addressing a specific security issue related to fraudulent certificates from DigiNotar.
Impact: An attacker with a privileged network position may intercept user credentials or other sensitive information
Description: Fraudulent certificates were issued by multiple certificate authorities operated by DigiNotar. This issue is addressed by removing DigiNotar from the list of trusted root certificates, from the list of Extended Validation (EV) certificate authorities, and by configuring default system trust settings so that DigiNotar's certificates, including those issued by other authorities, are not trusted.
DigiNotar's servers were compromised several weeks ago, with hackers obtaining access to hundreds of certificates. Apple has been criticized for being slow to respond to the issue, but is now doing so today by revoking DigiNotar's status as a trusted source.
DigiNotar, one of hundreds of firms authorized to issue digital certificates that authenticate a website's identity, admitted on Aug. 30 that its servers were compromised weeks earlier. A report made public Monday said that hackers had acquired 531 certificates, including many used by the Dutch government, and that DigiNotar was unaware of the intrusion for weeks.
Available updates include:
- Security Update 2011-005 (Lion) (15.59 MB)
- Security Update 2011-005 (Snow Leopard) (869 KB)
Popular Stories
Apple's Worldwide Developers Conference (WWDC) starts today with the traditional keynote kicking things off at 10:00 a.m. Pacific Time. MacRumors is on hand for the event and we'll be sharing details and our thoughts throughout the day.
We're expecting to see a number of software-related announcements led by a design revamp across Apple's platforms that will also see the numbering of all of...
At today's WWDC 2025 keynote event, Apple unveiled a new design that will inform the next decade of iOS, iPadOS, and macOS development, so needless to say, it was a busy day. Apple also unveiled a ton of new features for the iPhone, an overhauled Spotlight interface for the Mac, and a ton of updates that make the iPad more like a Mac than ever before.
Subscribe to the MacRumors YouTube channel ...
Apple today announced a complete redesign of all of its major software platforms called "Liquid Glass."
Announced simultaneously for iOS, iPadOS, macOS, watchOS, tvOS, visionOS, and CarPlay, Liquid Glass forms a new universal design language for the first time. At its WWDC 2025 keynote address, Apple's software chief Craig Federighi said "Apple Silicon has become dramatically more powerful...
Apple today announced that iPadOS 26 will be compatible with the iPad models listed below.
iPadOS 26 features a new Liquid Glass design, a menu bar, improved app windowing, and more.
iPadOS 26 supports the following iPad models:iPad Pro (M4)
iPad Pro 12.9-inch (3rd generation and later)
iPad Pro 11-inch (1st generation and later)
iPad Air (M2 and later)
iPad Air (3rd generation and...
In 2020, Apple added a digital car key feature to its Wallet app, allowing users to lock, unlock, and start a compatible vehicle with an iPhone or Apple Watch. The feature is currently offered by select automakers, including Audi, BMW, Hyundai, Kia, Genesis, Mercedes-Benz, Volvo, and a handful of others, and it is set to expand further.
During its WWDC 2025 keynote today, Apple said that 13...
Apple at WWDC announced iOS 26, introducing a comprehensive visual redesign built around its new "Liquid Glass" concept, alongside expanded Apple Intelligence capabilities, updates to core communication apps, and more.
Liquid Glass is a translucent material that reflects and refracts surroundings to create dynamic, responsive interface elements, according to Apple. The new design language...