As far as I know the 2010 attack isn&#x27;t applicable to actually deciphering 3G in the real world. From the paper:<p>&quot;However, the new attack uses both related keys and chosen messages, and thus it might not be applicable to the specific way in which KASUMI is used as the A5&#x2F;3 encryption algorithm in third generation GSM telephony. Our main point was to show that contrary to the assurances of its designers, the transition from MISTY to KASUMI led to a much weaker cryptosystem, which should be avoided in any application in which related key attacks can be mounted&quot;<p>The changes from MISTY to KASUMI were justified by the designers, they weren&#x27;t random. The reasons were to make it easier to implement in hardware, and more efficient. They explicitly stated they thought the changes wouldn&#x27;t make it more susceptible to related key attacks. I am skeptical it&#x27;s the result of IC manipulation.<p>Additionally Hailstorm is supposed to work against 4G connections and those use AES instead of Kasumi.<p>I suspect Hailstorm is not doing anything more sophisticated than jamming 3G&#x2F;4G frequencies to force a downgrade.