“Hamas’s top leader Yahya Sinwar could well be dead today if not for a low-tech communications system honed in prison that shields him from Israel’s intelligence-gathering dragnet,” the Wall Street Journal reports.
“Sinwar has largely shunned phone calls, text messages and other electronic communications that Israel can track and that have led to the demise of other militants.
Instead, he is using a complex system of couriers, codes and handwritten notes that allows him to direct Hamas’s operations even while hiding in underground tunnels.”