Techniques for secure network communication

Techniques for secure network communication are provided. Credentials for a user along with a transparently generated secret are sent to a resource that the user desires to establish a secure communication session with. After successful authentication of the user, an initial sequence number for a first transaction of the session is set on a client of the user. Thereafter, with each transaction of the session the client supplies a new and unique sequence number to a server of the resource and uses the secret to encode and validate that transaction. The server of the resource does not permit any transaction that includes an invalid or previously used sequence number.