Mac Products

This document describes the security content of iOS 5.1.1 Software Update, which can be downloaded and installed using iTunes.
For the protection of our customers, Apple does not disclose, discuss, or confirm security issues until a full investigation has occurred and any necessary patches or releases are available. To learn more about Apple Product Security, see the Apple Product Security website.
For information about the Apple Product Security PGP Key, see "How to use the Apple Product Security PGP Key."
Where possible, CVE IDs are used to reference the vulnerabilities for further information.
To learn about other Security Updates, see "Apple Security Updates".

Now you have more ways to reach millions of users around the world. We have expanded language support in iTunes Connect, so you can localize app metadata, keywords, and screenshots in 10 new languages: Traditional Chinese, Norwegian, Turkish, Finnish, Danish, Indonesian, Malay, Thai, Vietnamese, and Greek.

Check out the iTunes Connect Developer Guide for details on adding new localizations. And learn about other resources for Internationalization and Localization.

We’ve added new resources to the App Store Resource Center that make it even easier to promote your apps worldwide. The updated App Store Marketing and Advertising Guidelines for Developers provides helpful information on using the App Store badge—including new localized versions in Simplified and Traditional Chinese, Japanese, and Portuguese—as well as featuring Apple products in marketing materials, creating custom photography and video, promoting apps with accessories, and more. Visit the App Store Resource Center.

The Apple Push Notification Service provides a high-speed, high-capacity interface, so you should establish and maintain an open connection to handle all your notifications. Connections that are repeatedly opened and closed will affect the performance and stability of your connection to the Apple Push Notification Service and may be considered denial-of-service attacks. You should also connect regularly to the feedback service so you don’t send notifications to devices that no longer have your app installed. Learn more about connecting to the Apple Push Notification Service.

Great apps come in all sizes. If you happen to offer a larger app, we’ve made it even easier for App Store customers to get your app wherever they are. We’ve raised the Wi-Fi download requirement from 20 MB to 50 MB so customers can download apps up to 50 MB in size over their cellular data network.

The Mac App Store is the safest place for users to get software for their Mac, but we also want to protect users when they download applications from other places. Developer ID is a new way to help prevent users from installing malware on their Mac. Along with Gatekeeper, a new feature in OS X Mountain Lion, signing applications with your Developer ID certificate provides users with the confidence that your application is not known malware and has not been tampered with. Get started with Developer ID today and prepare your applications for Gatekeeper. Learn more.

We have extended the deadline for sandboxing your apps on the Mac App Store from March 1st to June 1st to provide you with enough time to take advantage of new sandboxing entitlements available in OS X 10.7.3 and new APIs in Xcode 4.3. Get more details about sandboxing your app and find answers to FAQs. Learn more.

OS X Mountain Lion introduces great features inspired by iPad, re-imagined for the Mac. With the Developer Preview, you can explore Game Center, Notification Center, Documents in the Cloud, new sharing capabilities, advanced security features and so much more. Read more about OS X Mountain Lion and download the Developer Preview today. Learn more.

Learn how to troubleshoot certain warning messages that may appear when you attempt to activate your iPhone or iPad.

Your <device> could not be activated because the activation server is temporarily unavailable.
The <device> is not recognized and cannot be activated for service.
iTunes was unable to verify your device.

We’ve added new resources to the App Store Resource Center that make it even easier to promote your apps worldwide. The updated App Store Marketing and Advertising Guidelines for Developers provides helpful information on using the App Store badge—including new localized versions in Simplified and Traditional Chinese, Japanese, and Portuguese—as well as featuring Apple products in marketing materials, creating custom photography and video, promoting apps with accessories, and more. Visit the App Store Resource Center.