Abstract: Techniques are provided for reputation tracking based on token exchange. A first token and a second token submitted to an application server from a client computing device are received. The first token includes a first token-generated value. The second token includes a second token reputation value and a second function-generated value generated at the client computing device. The second token is validated by verifying the second function-generated value based on the first function-generated value. A third token is generated that includes a third token reputation value and a third function-generated value. The third function-generated value is generated based on the second function-generated value and at least one secret not available to the client computing device. The third token reputation value is generated based on the second token reputation value.

Abstract: A method and device thereof for managing messages received at a bridging device. A bridging device receives a first message comprising a first contact information and a first distance vector representing a first number of hops the first message has traversed. The first distance vector is compared to a stored second distance vector corresponding to a stored second contact information for the remote electronic device, wherein the second contact information and second distance vector are provided by a second message. The second distance vector represents a second number of hops the second message has traversed. Provided the first number of hops is greater than the second number of hops, the first message is discarded. Alternatively, provided the first number of hops is not greater than the second number of hops, the second contact information and second distance vector are discarded and the first contact information and first distance vector are stored on a computer- readable memory of the bridging device.