There is disclosed in one example a computing apparatus, including: a hardware platform including a processor and a memory; a closed operating system including instructions within the memory to sandbox userspace applications; and a sandboxed userspace application, including: instructions to provide a user interface and user application code; and an agentless security library within the sandboxed userspace application, the agentless security library including instructions to provide security or privacy services to the sandboxed userspace application with minimal direct interaction from the user interface and user application code.