Názor k článku Obrazem: Android 4.0 vs 2.3 od Ondra Satai Nekola - Secure management of credentials Android 4.0 makes it easier...

Secure management of credentials

Android 4.0 makes it easier for applications to manage authentication and secure sessions. A new keychain API and underlying encrypted storage let applications store and retrieve private keys and their corresponding certificate chains. Any application can use the keychain API to install and store user certificates and CAs securely.

Address Space Layout Randomization

Android 4.0 now provides address space layout randomization (ASLR) to help protect system and third party applications from exploitation due to memory-management issues.