Dilian enrolled in the IDF and volunteered in an elite Special Operations Unit after completing the basic training in the
paratroopers unit. He then completed the officers' course and served in various commanding positions in the elite unit. Dilian also served in multiple positions in the Intelligence Corps headquarters. In 1994, he joined the Technological Unit of the Intelligence Corps and served as its commander from 1998 to 2002. Following claims of irregularities in his unit, the military investigative police started an investigation against Dilian. His promotion was canceled, and he retired from the IDF in 2002. In 2005, the Israeli newspaper
Maariv reported that all charges against him were dismissed. Dilian was among the founders of the Atidim project, association, which promoted the Israeli government’s project for developing the
Negev area. Dilian also worked as a consultant in the field of technology and headed the Board of Directors of multiple high-tech companies. He was a founding partner of
start-up companies such as
SolarEdge,
Vidyo and others. From 2015 to 2017, Dilian acted as the Vice President of
Stratasys, a company that manufactures
3D printers. ==Spyware Scandal==