somewhere around 2013 (and precisely - for ‘small’ Santa Claus, so 6th of December), OpenSSH was extended to provide new way of storing keys.
it’s important because the old format - MD5 hash - can be cracked veeeeery quickly. developers decide to use modification of bcrypt, that will slow down GPU-assisted cracking attempts in hashcat from gigahashes per second, to at most kilohashes.
what you need to do to upgrade your defenses?
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