Security researchers have been breaking OS X, Safari and the iPhone OS on a regular basis. Researchers continue to find serious weaknesses in Windows, Internet Explorer and Office on a monthly basis. Apple could have an extensive software security program in place, with advanced training and development methodologies. But we have no way of knowing. It’s Apple, so there s no telling. We may not know until a year or two or three from now when the company puts out a new version of OS X or iPhone OS.
Source: https://threatpost.com/has-apple-gotten-religion-software-security-042710/73883/