1. A non-transitory machine readable medium comprising instructions that, when executed, cause a machine to: collect, by a local trusted network device, local trust data related to behavior of the local trusted network device; receive, from one or more remote trusted network devices, additional trust data for the local trusted network device; determine a total number of the one or more remote trusted network devices from which the additional trust data is received, verify that the total number of the one or more remote trusted network devices satisfies a quorum, and in response to verifying that the total number of the one or more remote trusted network devices satisfies the quorum: calculate a combined trust score for the local trusted network device based on the local trust data and the additional trust data; and modify activity of the local trusted network device based on the combined trust score.