How Roaming Agreements Enable 5G MitM Attacks

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@swantje Great talk! Would using VoLTE mitigate this attack vector as I think one has a direct ipsec connection to the network of the cellular provider?
@njumaen Thank you! In theory, IPsec could prevent overhearing in Volte, but usually it's only used for integrity protection :/ And as long as SMS are in plain, an attacker might just use SMS