Earlier today, we heard how some encrypted technology messaging and plans could have been stolen without our knowledge already. At some point in the future, when quantum computing is available, they could be decrypted. Secret plans and technology could be revealed, especially as they apply to our missile technology, etc.
What should we be doing now, and what kinds of measures should we be taking in the meantime to protect the sensitive data? What can we do now so that when these quantum realities actually take place, the vulnerabilities aren't as exposed and we're better protected overall?