The potentials of digital therapeutics (DTx) platforms are showing gigantic possibilities in the treatment of behavioral health conditions with the use of evidence-based technology-grounded interventions. However, the reliance on software platforms, remote access and data flow is a novel complex cybersecurity, privacy and regulatory problem. DevSecOps - the combination of development, security, and operations - provides a systematic framework of developing security into the full cycle of DTx. The applicable elements of DevSecOps to behavioral health digital therapeutics are reviewed through the lens of technical, regulatory and operational factors, as well as empirical evidence of faster deployment, risk mitigation, and user trust. Additionally, the paper also identifies the new trends like adaptive security automation, AI-driven threat intelligence, and secure interoperability as the necessary facilitators of scalable, compliant, and reliable behavioral health DTx systems. A structured integration of DevSecOps is consequently set to become a major force of sustainability, expandability, and adoption of digital therapeutic procedures.