These people are a bunch of rabid dogs.
Those who remember the Soviet Union should have some idea of what it takes to get shot under such brutal governments. Labeling someone a "collaborator" in Arafat's Palestinian Authority is, I suspect, the same thing as being labelled a "wrecker" in Stalin's Russia. In my opinion, there is little connection between being a "collaborator" or "wrecker" and actual collaboration or wrecking.
Evidence for these opinions is hard to come by. However, it is hard to believe that Israel could be so competent as to recruit hundreds or thousands of Arab spies, and so incompetent as to have some of them unmasked almost every day. As to Israel fingering people to get the Palestinian Authority to do its dirty work for it, this would be very difficult. If the Israelis were so amazingly clever, they wouldn't have the kind of problems they do have. My totally uninformed guess is that Israeli intelligence relies on "national technical means" (ultra high resolution photo analysis, telephone intercepts, bugs, automated computer analysis of voiceprints, etc.) and, of necessity, does what it needs to do itself.