Sophos reports that any unauthorized individual can initiate a spoken command to Siri or initiate commands to make the device send mails by just pressing the button.
Sophos has however released workaround on the means to disable Siri when the device is locked. You need to go to setting-general -Passcode Lock and disable SIRI on iPhone 4S.
Siri, if you are not aware of, is the voice-activated personal assistant that is installed in iPhone 4S. Siri became an instant hit as soon as iPhone 4Swas released on Oct 14, Siri user however found later that enabling the feature opened the flood of connectivity issues.
Siri can be asked to deliver weather updates, set an alarm, or asked to do a restaurant search, or make a calendar appointment, and many more.
Apple is supposed to have obtained this artificial intelligence technology from a company called Siri when it acquired it.

