Evidence obtained through privacy invasion may still be admissible
This is the point that most people find surprising and, understandably, frustrating. The Family Court of Australia operates under the Family Law Act 1975 (Cth) and the Evidence Act 1995 (Cth). Under section 138 of the Evidence Act, evidence obtained improperly or in contravention of Australian law is not automatically excluded. The court has a discretion to admit the evidence if the desirability of admitting it outweighs the undesirability of admitting evidence obtained in that way.
In practice, the Family Court frequently admits evidence obtained through one spouse accessing the other's emails, phone, or financial records, particularly where the evidence is relevant to property disclosure obligations or the welfare of children. The court weighs factors including the seriousness of the impropriety, the importance of the evidence, and whether it could have been obtained lawfully (for example, through subpoena or disclosure orders).
This means your spouse may be able to use improperly obtained evidence in family law proceedings and you may simultaneously have a civil claim against them under the statutory tort for the manner in which they obtained it. These are separate proceedings with separate remedies.
Running a tort claim alongside family law proceedings
The statutory tort claim is brought in the Federal Court of Australia or the Federal Circuit and Family Court. It is a civil claim for damages and, where appropriate, injunctive relief. It runs independently of any family law property settlement, parenting dispute, or divorce proceeding.
There are tactical considerations on both sides. For plaintiffs, a tort claim (or the credible prospect of one) may discourage ongoing invasive conduct and strengthen your position in settlement discussions. A pre-action demand letter, available at a fixed fee of $990, can serve as a formal notice that the conduct is actionable and must stop.
For defendants, the existence of family law proceedings does not provide a blanket justification for accessing a spouse's private information. The court will consider the purpose of the conduct, but also its proportionality. There are lawful mechanisms within the family law system for obtaining financial disclosure, including orders for discovery, subpoenas, and notices to produce. Resorting to self-help by accessing a spouse's accounts may not satisfy the necessity defence or the lawful authority defence under the statutory tort.
Where privacy invasion overlaps with defamation
In some separation disputes, a spouse does not merely access private information but also publishes it: to family members, on social media, or to mutual acquaintances. Where that publication damages the plaintiff's reputation, a defamation claim may run alongside the privacy tort claim. The statutory tort and defamation operate under different legal frameworks, but they can arise from the same facts. Truth is a complete defence in defamation but is not a defence to the statutory tort. Private information that is accurate may still ground a privacy claim. See our comparison page for a detailed explanation of how the two causes of action differ.
Family violence and the necessity defence
The statutory tort includes a defence of necessity where the defendant reasonably believed the invasion was necessary to prevent or lessen a serious threat to the life, health, or safety of a person. This defence expressly contemplates domestic and family violence emergencies. A person who accesses a partner's phone to document threats, or who installs a camera to record violent behaviour, may have a defence to a privacy tort claim if the conduct was proportionate and directed at preventing harm. The defence is fact-specific and must be assessed on the circumstances of each case.