 Shares of Fortinet Inc. FTNT, -5.65 were off more than 13 in after-hours trading Wednesday after the cybersecurity company topped expectations with its latest earnings and revenue numbers but delivered a billings forecast for the current period that came up light. The company logged third-quarter net income of 231.6 million, or 29 cents a share, up from 163.1 million, or 19 cents a share, in the year-earlier period. 