Unsanity today released Paranoid Android, which the company says can protect you from a serious security flaw under Mac OS X. “A vulnerability in Apple’s Mac OS X results in a potential situation in which a malicious person could execute arbitrary commands on your machine, such as deleting your home directory, or doing other harmful actions,” notes Unsanity. “This vulnerability involves the use of URL “schemes”. These are the part of a web address that specifies what program should be used to handle the address.”