Concepts and technologies are disclosed herein for web activity concealment. A system can include a memory storing instructions that, upon execution by a processor, cause the processor to perform operations. The system can be communicatively coupled to a network. The operations can include detecting a network message that is directed to a target source, where the network message is generated by a client application of a machine-to-machine device. The operations can include identifying, based on the network message, a client action that is associated with the client application. The operations can include counterpoising the client action by generating a supplemental action command. The operations can include providing the supplemental action command to the machine-to-machine device.