# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2012-05-31 19:36:28 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/208280805565399040) RT @joncallas: iOS Security Guide out from Apple: http://t.co/cFaIRWjI Contains high level description of many iOS things.