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by ybaumes 4446 days ago
Is sms channel really secure? Isn't it a plain text channel, as opposed to an unencrypted channel?
1 comments
yuvadam 4446 days ago
SMS is encrypted on GSM control channels using the broken A5/1 stream cipher which has well-known weaknesses.
link
anaphor 4446 days ago
and the base station can _disable_ encryption completely without any warning given to the cellphone user.
link