The security can be impenetrable only at the given time, as sooner or later, any algorithm can be cracked, which is why there is constant progress in the security field.
Uncanny! I'm not that strong in it, however, algorithm is literally something that should be done as secure as it possible, that is the main purpose of client's choice.
It all boils down to devs being able to secure their service as soon as they notice something is wrong with it.