The Truth About Social Media for Biz: It's a Risk

FORTUNE -- A fraudster hacks into a company's Twitter account and posts a phony announcement about sales reaching an all-time high. Shares in the company soar and then quickly crash after investors realize the news was merely a ruse to manipulate the stock price. Companies must, of course, be vigilant in preventing hackers from infiltrating their social media accounts. But that is especially true following the Security and Exchange Commission's decision earlier this month to let businesses disclose important financial information through Twitter and Facebook.