Witness K, a former Australian spy, and his lawyer, former ACT Attorney-General Bernard Collaery, are currently being prosecuted for breaches of the Intelligence Services Act 2001 (Cth). The allegations relate to the exposure of Australia's alleged espionage against Timor-Leste during the negotiation of a resources treaty between the two countries in the early 2000s. The prosecutions have been shrouded in secrecy and elicited considerable public controversy. They raise complex legal issues, including the legality of spying on a friendly neighbour, the invocation of national security law to keep the prosecutions secret, the role of Attorney-General Christian Porter in the prosecutorial process, and the broader impact on Australia's court system and the rule of law.