From the September 21, 2023, Washington Post (headline "Tensions 'beginning to boil' in Gaza as fears of new conflict mount"):
Hamas put its forces on high alert recently, stopping cars near the border to check for Israeli infiltrators. The group held field exercises last week with Islamic Jihad and other armed factions, conducting drills on rocket launches, kidnapping soldiers and "storming settlements," according to local Gazan media.
A country can have the most high-tech weapons and extensive spy network imaginable, but even though a lot of what is in the press is garbage, sometimes it makes sense to read carefully and react accordingly. It all looks clearer in retrospect.