"As our new head of APAC sales, Gary brings exceptional leadership skills and knowledge of the region to Tenable as well as experience with high-growth technology companies, all of which make him a great addition to the company and to the global sales team," said CEO Ron Gula.
Jackson was most recently vice president for Asia Pacific Japan at Aruba Networks.
He previously held similar roles at Force10 Networks, EMC, Cisco and Pyramid.
Earlier in his career he held sales roles at Prime and Digital Equipment Corporation.
"Cyber attacks were up in 2014 and the world is growing more concerned about network security at all levels of business, so I'm excited for the opportunity to connect customers with the best continuous network monitoring and vulnerability management technology in the world to help them detect, assess and protect the security of their networks," said Jackson.