Mobile networked devices face a unique set of challenges, particularly when used in an adversarial environment. These devices must be able to respond to changing circumstances in both their physical and network environment. We present DIBS, a system that enables devices to dynamically insert bump-in-the-stack protocols in response to changing conditions. We evaluate this system by measuring connection throughput and CPU usage as it switches between an unmodified protocol stack, a VPN, and a high-secrecy multichannel stack. Our experiments show that DIBS is able to switch seamlessly between protocols without interrupting ongoing connections or introducing additional network or processing overhead. This ability will enable devices to adapt communications rapidly in response to changing cybersecurity and physical environments.