e>Alice</code>).</p><p>To improve security, you should enable <a href=/v1.15/docs/concepts/security/#authentication>authentication features</a>,
and use authenticated identities in authorization policies. However, strongly authenticated identity is not required
for using authorization. Istio authorization works with or without identities. If you are working with a legacy system,
you may not have mutual TLS or JWT authentication setup for your mesh. In this case, the only way to identify the client is, for e