In the rapidly approaching era of quantum computing, the adoption of Secure by Design (SbD) principles has become paramount for ensuring the integrity and security of digital infrastructures. As quantum computing's capability to decrypt existing cryptographic defenses grows, the traditional approach of treating security as an afterthought in software development is no longer viable. Instead, SbD advocates for embedding robust security measures, including quantum-resistant encryption, right from the software's conception through to its deployment and maintenance, offering a proactive defense against the quantum threat landscape.