Part 2 – Looking at GSM 30 years later | Hacker News

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		Part 2 – Looking at GSM 30 years later (harrisonsand.com)
		11 points by hoppla on Feb 15, 2021 \| hide \| past \| favorite \| 1 comment

rasz on Feb 15, 2021 [–]

Its worth mentioning you used to be able to extract Ki from the SIM card by bruteforce. Second version of SIM cards included response throttling to prevent it and came out somewhere in the middle to end of the nineties.

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