Yet another senior exec leaves Apple; VP of global security departs

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Apple vice president of global security John Theriault has left his position at the company following an investigation over a lost iPhone 4S prototype earlier this year.

Theriault led the investigation of the lost phone, which was first reported missing by an Apple employee in July. As part of the investigation, Apple allegedly offered a cash reward to the person responsible for finding the phone. Upon learning the identity of the iPhone 4S finder, Apple security officials visited the man’s residence and posed as San Francisco Police officers to search for the device. Local law enforcement is still investigating the case, according to a report from 9to5mac.

Prior to joining Apple in 2007, Theriault was chief security officer and vice president at pharmaceutical company Pfizer and a former FBI special agent. While at Apple, Theriault is well-known for leading an anti-counterfeit team in 2008 to curb the growing number of counterfeit Apple products in China.

Theriault’s departure is the latest of Apple’s top executives to leave the company for one reason or another. Previously, Apple SVP of Retail Ron Johnson left the company to become clothing retailer J.C. Penny’s CEO. Also, SVP of Mac OS X Bertrand Serlet, VP of iAds Andy Miller and Siri co-founder Dag Kittlaus have left the company as well over the last few months.

The departures don’t necessarily mean that things are turning sour with Apple’s management. With Steve Jobs taking a leave from the company’s day-to-day duties last year as well as his passing last month, many may have felt it was time to move on from Apple.