Australia
Australian uniform defamation legislation generally requires a claimant to establish serious harm. Potential defences may include substantial truth, contextual truth, public interest, qualified privilege, honest opinion and fair reporting of proceedings of public concern. Each defence has legal requirements and must be supported by the actual evidence and reporting conduct.
For public-interest reporting, relevant considerations can include the seriousness of the meanings, distinguishing allegation from proven fact, source integrity, verification steps and whether the subject’s response was sought and fairly represented.
New Zealand
New Zealand’s Defamation Act 1992 includes defences such as truth, honest opinion and forms of privilege. Honest opinion must be genuine and have the required factual basis. The applicable law may depend on where people are identified, where material is accessed and where reputational harm occurs.
Because this investigation covers both countries, material with cross-border risk should receive jurisdiction-specific legal review before publication.