The SDM podcast features Rob Cairns and Tim Nash discussing smartphone security. They examine risks, like lost devices and vulnerabilities in apps like WhatsApp, and debate Android versus iOS security. The conversation covers location tracking, the dangers of third-party apps, and the importance of keeping devices updated. They also touch on physical security measures like hardware keys and passcodes, and the ethics surrounding device access and data privacy. The podcast concludes with actionable tips for users to better secure their phones, emphasizing fewer apps and stronger passcodes.