Ukrainian teams opening up downed Russian one-way drones keep finding the same parts list: a Raspberry Pi-class minicomputer, a webcam, USB modems — and SIM cards. Ukraine’s defence intelligence has documented the arrangement across modernized Shahed and Gerbera airframes: the drone logs into the local LTE network like any other subscriber and streams its reconnaissance footage home through disposable Telegram bots. Some of the SIMs are Ukrainian, bought from the networks of the country being attacked. Others, pulled from drones downed in September 2025, were European — evidence, in plastic, of routes planned months ahead through Poland and Lithuania.

An earlier note here told the emission story the usual way round: emit and you die. This is the inversion. The drone emits constantly — and survives, because on a network carrying millions of phones, one more subscriber is not a signature. It is camouflage by enrolment: the cheapest strike system of the war hides inside the victim’s own civilian infrastructure, using bandwidth the defender built, on towers the defender maintains, under tariffs the defender regulates.

That last word is where the story turns. The counter to this drone is not an interceptor. Ukrainian operators have blocked roaming for suspicious SIM classes; Kyiv is weighing passport checks for SIM purchases — air defence conducted at the mobile-shop counter. Whether it works is an open duel, and Russia gets a vote. But the shape of the exchange is already instructive: a weapon that borrowed the enemy’s infrastructure handed the enemy its weakest point, because access to infrastructure can be revoked by the people who own it.

A century of anti-aircraft thinking asks how to hit the incoming object. The SIM card in the aluminium box asks a better question: what does the object depend on — and who signs its contract?