ackground>Background</h2><p>Modern application architectures are increasingly based on shared services that are deployed and scaled dynamically on cloud platforms. Traditional network edge security (e.g. firewall) is too coarse-grained and allows access from unintended clients. An example of a security risk is stolen authentication tokens that can be replayed from another client. This is a major risk for companies with sensitive data that are concerned about insider threats. Other network security approache