My guess is, that similar flaws have been known and exploited for ages. I doubt that iridium was ever truly safe to begin with. I was recently looking into renting an iridium satellite modem and while doing so, I found a pdf on some shady private intelligence agencies website that documented a tool to intercept calls and messages as well as locating users of the network. The screenshots looked like a late 90s, early 2000s windows ui and talked about special radio equipment that the tool interfaces with.

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