The tort of collateral abuse of process in Australia requires proof of an overt act or threat distinct from the initiation and prosecution of proceedings, and this is a substantive requirement, not merely evidential. A bankruptcy notice is likely not 'process' for the purposes of the tort because it is not a process of a court attended by judicial compulsion. The tort can only be committed by a party to the proceedings, not by the party's solicitor. After a solicitor-client retainer ends, the solicitor's duty to the former client is confined to protecting confidences and the integrity of the judicial process — there is no continuing duty of loyalty.
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