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If the computers used for brute-forcing security in accounts become more powerful due to the ever increasing power of technology year after year, wouldn't it be a concern for security? As they would be more easily brute-forced?
The security concern should be on how did you get access to what are you brute forcing! (the key)
and if it's a password guessing for something that has a proper security measurements (like block access after X attempts) it will take the attacker ages to guess a password. and by that time the security policy should enforce changing passwords every X days
as for the question itself, no it shouldn't be since there are some devices (boards with +10 custom chips)
that get the job done in few days, and they existed forever. not to forget overclocked GPUs for home users
Proper encryption and proper policies will always be the solution for brute forcing no matter how fast your CPU will get