The Defence Signals Directorate Information Security Group is the national authority on matters relating to the security and integrity of Australian government communications and information systems.
For information that is processed, stored or communicated by electronic or similar means, the role of the Information Security Group is:
1. to provide material, advice and other assistance to Commonwealth and State authorities on matters relating to the security and integrity of information that is processed, stored or communicated by electronic or similar means; and
2. to provide assistance to Commonwealth and State authorities in relation to cryptography and communications technologies.