Mr. Gleser heads ISDS, a security firm based in Israel. Previously, he served from 1969-1996 in the Israeli Defense Forces, in its Special Antiterrorism Unit, including reserve duty. From 1972-1982, he served in the Israeli Security Agency, as a Sky Marshal for El Al Israeli Airlines and a Security Officer for El Al Israeli Airlines. From 1966-1969, he was an Instructor of National Defense of Jewish Communities Overseas.
Within ISDS, he is responsible for the creation and training of Special Antiterrorism Units. He also is in charge of Strategy and Antiterrorism; Open Source Intelligence; Security for Mega Events, Olympic Games; Infrastructure Security (Nuclear Power Plants, Ports, Airports, Oil/Gas Installations, Critical Infrastructure Installations); and Homeland Security/Intelligence.
He has attended many important international events such as: