https://barryocallaghan.com/tags/security-strategy/Recent content in Security-Strategy on Barry O'CallaghanHugo -- gohugo.ioenme@barryocallaghan.com (Barry O'Callaghan)me@barryocallaghan.com (Barry O'Callaghan)© 2026 Barry O'CallaghanTue, 20 Oct 2026 00:00:00 +0000https://barryocallaghan.com/posts/q-day/Tue, 20 Oct 2026 00:00:00 +0000me@barryocallaghan.com (Barry O'Callaghan)https://barryocallaghan.com/posts/q-day/<div class="flex px-4 py-3 rounded-md shadow bg-primary-100 dark:bg-primary-900" > <span class="text-primary-400 pe-3 flex items-center" > </span> <span class="dark:text-neutral-300" >This is <strong>Part 1</strong> of the <em>Post-Quantum Cryptography</em> series — a plain-language guide to what&rsquo;s coming, why it matters, and what to do about it.</span> </div> <p>Most security problems announce themselves. A suspicious login, a port left open, a file where it shouldn&rsquo;t be. You get a signal, and usually a chance to respond.</p>