McAfee and CNET are stung in options backdating scandal. Who's next? McAfee Inc. and CNET Networks have become the latest companies caught up in the scandal over stock option backdating. The question is: what other heads will roll? McAfee said today that that it has terminated the employment of its president, Kevin Weiss and that the company’s Chief Executive Officer and Chairman George Samenuk is retiring from those roles and the board of directors has appointed Dale Fuller as interim CEO. Following an internal investigation, the company will have to restate financial results over a 10-year period to record pre-tax non-cash charges of between $100 million and $150 million for stock-based compensation. On the same day, CNET Networks said that an internal investigation there also turned up inproprieties and named a new CEO. So who’s next? All indications are that backdating options was a common practice, especially in the option-happy tech sector. Apple’s Steve Jobs has gone on record saying that he knew of the options pricing irregularities. Will he be forced to step down also? If McAfee’s actions today are any indication, Jobs’ job could be on the line, and more than a few tech firm boardrooms may be getting an emergency facelift courtesy of the SEC. Security