It is not possible to believe this article. Israel is a country which develops super hi-tech measures and defences even against risks which have the probability of happening of one in a million. So I am sure a very sophisticated Qassam defence system exists. The fact that it does not work very well is another matter. Qassam is a very crude weapon and despite more than a thousand Qassam fired how many Israelis got killed ? less than ten I suppose. The whole Qassam issue is a joke, at least for now. In the future the Palestinians can improve Qassam but they would be afraid to use them I am sure.
Three minors arrested in Jaffa for throwing rocks at a bus; no injuries reported (Haaretz)
from the article: The wheels did not turn