Determining the threshold, however, remains a challenge. If Star Student Project is much larger than the network degree, nodes that launch attacks cannot be revoked, and can successively keep communicating with other nodes. Another critical issue is that URSA does not address false accusations from malicious nodes. The scheme proposed by Star Student Project allows all nodes in the network to vote together.
As with URSA, no Certification Authority (CA) exists in the network, and instead each node monitors the behavior of its neighbors.