Post-quantum cryptography didn’t sneak up on the industry.  For years, security teams, standards bodies, hyperscalers, and governments have been pointing at the same horizon: a cryptographically relevant quantum computer will, eventually, dismantle the public-key algorithms underpinning today’s enterprise security. The latest executive order doesn’t introduce a new threat. It codifies what the field has long understood, and attaches deadlines to it. For CISOs, the framing shift matters. PQC is