It would have been a lot harder to crack encryption if the NSA hadn't gotten involved in helping to set the standards for the encryption rules allowing themselves an easier task of breaking it. While that has now been addressed to some extent, the pace of advancement in encryption was delayed for all those years. Now comes the harvest of those actions.

The only way to secure this is to turn to the same source as the way out. If quantum computing threatens to crack existing methods of encryption, then it is also the source a stronger encryption method. The big issue will be the inertia in getting it established once perfected on a new method. There will always be those depending on obscurity for security, as well as corporations who see no profit from investing in better security till it bites them; a bit too late then to start on better procedures and methods.