"You've got to adopt a model of zero trust of security," Leighton told Jim Cramer in a "Mad Money." "You can't just allow unfettered access once you're past the firewall." Akamai reported bringing in $843 million in revenue in the three-month period ended March 31. About $310 million of that was delivered through the security arm, up 29% from $240 million in the year-ago quarter. In the same quarter, Akamai's Edge Technology Group, which helps businesses produce and distribute content, grew by less than 2% and made up 63% of revenues, down from almost 69% during the same period the year prior. "[Security] will become a bigger part of Akamai and that's because we have solutions that can really defend enterprises," Leighton said.