Defamation Act 2006

The Act primarily affects publishers (traditional media, internet platforms, individuals posting online, search engines, ISPs), aggrieved persons (natural persons and limited classes of corporations), digital intermediaries, and the courts administering defamation proceedings.

Natural persons whose reputations are harmed by any form of "matter" (s 3: articles, broadcasts, internet content, gestures, oral utterances) may sue, provided the serious harm element is met (s 9A). Excluded corporations—those with fewer than 10 employees not associated with larger entities, or non-profit bodies—retain a cause of action only if they suffer serious financial loss (s 8(2)). Public bodies and most trading corporations are barred. No cause of action exists for defamation of or by deceased persons (s 9).

Publishers include authors, editors, printers, broadcasters, website operators, social media platforms and search engine providers. However, the 2025 amendments substantially narrow exposure for "digital intermediaries" (s 3) who do not originate content. Internet service providers operating conduit services, cloud storage providers, caching services and search engines receive statutory exemptions (ss 9C, 9D) if they remain passive. Section 28A adds a further defence where an accessible complaints mechanism exists and reasonable access prevention steps are taken within seven days of a written complaint.

Posters of digital matter (s 3) remain primarily liable but may benefit from preliminary discovery orders under s 20A, which require courts to weigh the Act's objects and privacy/safety considerations before ordering identification. Non-party digital intermediaries can be ordered to take access prevention steps even after judgment against the primary defendant (s 36A), extending the Act's reach to platforms not originally joined.

Government entities are bound by the Act (s 4), and absolute privilege attaches to parliamentary and court proceedings (s 24), police officers acting officially (s 24(2)(ba)), and matters listed in Schedule 1 (currently empty).

Legal practitioners, compliance officers and online platform moderators must advise clients on concerns notice compliance, the 28-day offer window, and the nuanced reasonableness tests in defences such as qualified privilege (s 27) and public interest (s 26A). Courts, particularly judicial officers, are given expanded gatekeeping roles: determining serious harm and digital intermediary exemptions on the pleadings where possible (ss 9A, 9E), and making non-party orders (s 36A).

The Act therefore affects a wide spectrum—from individual social media users to multinational technology corporations—while carving out deceased estates, most corporations, and purely passive digital conduits.

Plaintiffs enjoy the right to a speedy, non-litigious remedy (s 2(d)) and to receive an offer to make amends that may include apology, correction, access prevention steps and compensation (s 14). They hold the right to particularise imputations in a concerns notice (s 11A) and to have serious harm determined as a threshold issue (s 9A). Where proceedings are brought, plaintiffs may seek single-sum damages for multiple causes of action (s 36) and can request non-party digital intermediary orders (s 36A).

Defendants' key rights are the panoply of defences. The defence of justification (s 22) turns on substantial truth. Contextual truth (s 23) permits defendants to rely on substantially true imputations to neutralise additional defamatory sting. Absolute privilege (s 24) is unqualified. The public interest defence (s 26A) requires the defendant to prove the matter concerns a public interest issue and that the defendant reasonably believed publication was in the public interest, with the court weighing nine statutory factors including source integrity, attempts to obtain the plaintiff's side of the story, and the importance of freedom of expression. Qualified privilege (s 27) protects reasonable publication to recipients with an interest or apparent interest in the subject. Honest opinion (s 28) protects statements of opinion based on proper material that is substantially true or privileged. The new digital intermediary defence (s 28A) is available where an accessible complaints mechanism exists and reasonable steps are taken post-complaint; it is defeated only by malice in establishing the service itself.

Publishers have the duty to respond to concerns notices within the applicable period (s 13) and to ensure offers to make amends comply with the detailed content requirements of s 14, including 28-day irrevocability (s 14(1)(ba)). Digital intermediaries must maintain accessible complaints mechanisms (s 28A(1)(b)) and be prepared to take access prevention steps (defined in s 3 as removal, blocking or disabling access).

Courts hold duties to determine serious harm and digital intermediary exemptions early (ss 9A, 9E), to ensure damages are rationally related to harm (s 31), and to apply the closest-connection choice-of-law rule (s 10). Costs discretion is guided by conduct, including misuse of financial superiority to delay settlement (s 37).

The Act imposes no general duty to verify information before publication, but the reasonableness factors in ss 26A, 27 and 28 effectively require defendants to demonstrate steps taken to verify, distinguish allegation from fact, and seek response where practicable.

The Act creates no criminal offences; defamation remains a civil tort. Enforcement occurs through damages, injunctions, corrective orders and costs sanctions.

The primary "penalty" is an award of damages. Non-economic loss is capped at an indexed figure (s 32), awarded in full only in the most serious cases. Aggravated damages are available separately where warranted (s 32(2A)) but exemplary or punitive damages are prohibited (s 34). Damages must bear a rational relationship to harm (s 31) and the defendant's state of mind is generally irrelevant except to the extent it affects harm suffered (s 33).

Failure to accept a reasonable offer to make amends triggers a complete defence (s 17), while unreasonable refusal of a plaintiff's settlement offer can result in indemnity costs against the defendant (s 37(2)(a)). Conversely, a plaintiff's unreasonable failure to accept a defendant's offer can produce indemnity costs against the plaintiff (s 37(2)(b)).

Injunctive relief is available, including temporary and final orders preventing continued publication (s 36A). Courts may order non-party digital intermediaries to implement access prevention steps even if the intermediary is not liable (s 36A(6)), provided the intermediary has been heard (or urgent temporary orders made where expedition is necessary).

Concerns notice non-compliance prevents commencement of proceedings (s 11B), although leave may be granted where limitation issues arise or it is just and reasonable. Failure to provide further particulars within 14 days after a further particulars notice means the concerns notice is taken not to have been given (s 11A(5)).

Enforcement of costs orders and judgments follows ordinary civil procedure, but s 37 expressly directs courts to consider the manner in which parties conducted litigation, including any misuse of superior financial position to hinder early resolution.

The Act is designed to operate uniformly with equivalent legislation in other Australian jurisdictions. Section 10's choice-of-law rules ensure that the substantive law of the jurisdiction with the closest connection to the harm applies, preventing forum shopping. It expressly preserves the general law except where modified (s 5(2)) and applies the common law as if the repealed 1938 Ordinance had never been enacted (s 5(3)).

Interaction with the Corporations Act 2001 (Cth) occurs via the definition of "associated entity" (s 3, cross-referencing s 50AAA) and the exclusion of most corporations from standing (s 8). The Limitation Act 1981 (NT) is engaged by s 11B(4)–(5) to permit late commencement where the applicable period for an offer to make amends would otherwise bar proceedings.

Commonwealth telecommunications and broadcasting legislation is implicitly accommodated through the broad definition of "matter" and "online service" (s 3), while the digital intermediary exemptions in ss 9C–9D mirror safe-harbour concepts in copyright and e-commerce statutes.

The Act interacts with privacy law through s 20A(2)(b), which requires courts to consider privacy and safety before ordering preliminary discovery of posters' identities. Absolute privilege (s 24) overlaps with parliamentary privilege and judicial immunity at common law.

Transitional provisions (Part 7) ensure that 2025 amendments apply only to post-commencement publications, with complex "straddling" rules where the same or substantially the same matter gives rise to both pre- and post-commencement causes of action (s 49). Section 53 preserves the pre-amendment version of absolute privilege for pre-commencement actions.

The Act does not affect criminal defamation, although s 40 abrogates the privilege against self-incrimination in civil proceedings with a corresponding use immunity.

The Defamation Legislation Amendment Act 2025 (assented 10 August 2025, commenced 11 August 2025) introduced the most significant overhaul since the Act's original enactment. The changes implement the second stage of national defamation law reform focused on online content.

Key insertions include:

• Serious harm element (s 9A) and judicial officer determination to weed out trivial claims early.
• Division 2A (ss 9B–9E) creating exemptions for caching, conduit, storage services and search engines, plus early determination procedure.
• New public interest defence (s 26A) modelled on Reynolds and Lange but with statutory factors.
• Scientific or academic peer review defence (s 27A).
• Digital intermediary defence (s 28A) requiring complaints mechanism and timely access prevention steps.
• Updated offer to make amends rules (amendments to ss 13, 14) expressly permitting access prevention steps for digital matter.
• Preliminary discovery for identifying posters (s 20A) and non-party orders against digital intermediaries (s 36A).
• Expanded service provisions (s 41) accommodating social media messaging and online forms.
• Consequential amendments to absolute privilege (s 24) to include official police communications.

These changes were driven by the exponential growth of social media, search engines and user-generated content, which exposed the 2006 Act's inadequacy in allocating liability between originators and platforms. The reforms aim to reduce the chilling effect on online speech, encourage platform accountability through complaints mechanisms rather than automatic liability, and ensure trivial or borderline claims are dismissed early, thereby reducing legal costs and court burden. Transitional provisions (Part 7) were added to manage the shift without retrospective disruption.

Although the provided text contains no reported decisions, the structure of the 2025 amendments anticipates several recurring controversies.

The serious harm threshold (s 9A) will generate interlocutory litigation over what constitutes "serious" harm, particularly for corporations requiring serious financial loss. Early determination on pleadings (s 9A(7)) raises natural justice concerns where reputational harm is fact-sensitive.

Digital intermediary exemptions (ss 9C, 9D, 9E) will test the boundaries of "limited role". Courts will need to decide whether algorithmic amplification or targeted advertising constitutes "promoting" the matter (s 9C(1)(c)(v)) or "prioritising" results for payment (s 9D(2)). The s 28A defence introduces a new "accessible complaints mechanism" concept; disputes will arise over whether generic email addresses or buried webforms satisfy the requirement, and whether seven-day response times are reasonable for high-volume platforms.

The public interest defence (s 26A) imports a reasonableness overlay similar to qualified privilege. Judicial interpretation of the nine statutory factors, especially "importance of freedom of expression" (s 26A(3)(i)) and source confidentiality (s 26A(3)(f)), will likely produce appellate guidance. The honest opinion defence (s 28) now expressly accommodates hyperlinks as "proper material" (example to s 28(5)(a)(iii)), but the extent to which hyperlinked material must itself be substantially true remains contentious.

Section 36A non-party orders against digital intermediaries raise constitutional and practical issues: can an overseas platform be effectively ordered to block content globally? The requirement to afford an opportunity to be heard (s 36A(4)) may conflict with urgent interim injunctions (s 36A(5)).

Choice-of-law litigation under s 10 will continue in cross-border internet cases, particularly where harm is diffuse. The "closest connection" test, while clearer than previous rules, still leaves scope for argument about weighting of residence, extent of publication and extent of harm.

Controversies also surround the interaction between s 20A preliminary discovery and privacy interests, especially where posters allege domestic violence or safety risks (example to s 20A(2)(b)).

Most practitioners still treat defamation as a traditional media tort and overlook the profound shift wrought by the 2025 amendments. Here are the hidden traps:

1. The complaints mechanism trap (s 28A): Many platforms assume their general "report content" button satisfies the accessible complaints mechanism requirement. The definition (s 28A(6)) demands an easily accessible address or location for the plaintiff to use. Generic support tickets buried in help menus have already been held insufficient in analogous Commonwealth schemes. Platforms must provide a dedicated, prominently displayed mechanism that a reasonable plaintiff in the plaintiff's circumstances could locate.

2. "Substantially the same matter" in transitional provisions (ss 45, 49): The 12-month straddling rule can inadvertently pull a 2026 publication back under the pre-2025 Act if joined with an earlier publication. Plaintiffs' lawyers are increasingly issuing separate proceedings to avoid this, creating multiplicity that s 20 was intended to prevent.

3. Access prevention steps are not binary: The definition (s 3) includes steps to "block, disable or otherwise prevent access, whether by some or all persons". Courts may order geo-blocking rather than global takedown, but defendants who fail to implement even partial measures (e.g. age-gating or account suspension) lose the s 28A defence even if global removal would be disproportionate.

4. Concerns notice hyper-particularity: Section 11A(1)(a)(iii) requires the aggrieved person to inform the publisher of the defamatory imputations that the person considers are or may be carried. Drafting a concerns notice that is too narrow risks being unable to rely on additional imputations at trial; drafting too broadly risks costs arguments that the notice was fishing. The further particulars notice mechanism (s 11A(3)–(5)) is under-used but lethal if missed.

5. Qualified privilege vs public interest (ss 26A, 27): Many defendants plead both. However, s 27 no longer requires public interest, while s 26A does. The malice defeat rules differ slightly. Pleading one but not the other can be fatal on appeal if the court characterises the publication differently.

6. The s 9A(7) pleadings dismissal: Judicial officers may dismiss on the pleadings if particulars of serious harm are insufficient. Many older statements of claim simply allege "reputational damage" without identifying serious financial loss for corporate plaintiffs or concrete reputational consequences (lost clients, cancelled contracts, ostracism). These claims are now vulnerable to early strike-out.

7. Non-party digital intermediary orders survive defences: Even if the intermediary would have a complete s 9C or s 28A defence, s 36A(6) still permits the court to order it to block content once the primary defendant has been found liable. This creates a backdoor enforcement mechanism that circumvents the exemptions.

8. Indexing of the cap: The $250,000 non-economic loss cap is adjusted annually by reference to average weekly earnings (s 32(4)). Many practitioners still quote the original figure; the current indexed amount (as at 2025) is materially higher and must be checked via the latest Gazette declaration.

These gotchas explain why specialist defamation counsel are seeing increased work despite the apparent simplification of the law.

Compliance begins with robust pre-publication processes. For traditional publishers: implement a "serious harm filter" asking whether the proposed publication is likely to cause serious reputational harm beyond mere annoyance. Maintain records of verification steps, attempts to obtain response, and distinctions between allegation and fact—these are mandatory considerations under ss 26A(3) and 27(3).

For digital intermediaries: establish and document an "accessible complaints mechanism" that is obvious to an ordinary user (prominent link, dedicated email, in-app reporting button clearly labelled "Report Defamatory Content"). Train moderation teams to action complaints within seven days with documented consideration of reasonable access prevention steps. Retain audit logs showing when complaints were received and what steps were taken. If the platform uses algorithms that promote content, ensure human oversight can override for s 9D(2) compliance.

All publishers should adopt a concerns notice playbook: upon receipt, immediately diarise the 28-day (or 14-day post-further-particulars) offer window. Offers must be drafted to satisfy every element of s 14(1), including the new 28-day open period (s 14(1)(ba)). Consider including access prevention steps for digital matter even if not strictly required. Where an offer is rejected, prepare evidence showing it was made as soon as reasonably practicable and was reasonable having regard to prominence and timing of any correction (s 17(2)).

Organisations should maintain a register of apologies and corrections; these are admissible in mitigation (s 35) and protected from constituting admissions (s 19). For repeated publications of substantially similar matter, consider separate proceedings or seek leave under s 20 to avoid multiplicity arguments.

Corporate plaintiffs must quantify serious financial loss with precision; generalised assertions of reputational harm will fail s 9A(2). Individuals should particularise serious harm by reference to concrete consequences (lost employment, harassment, shunning by peers).

In litigation, seek early determination of serious harm and digital intermediary exemptions. When advising defendants, plead all available defences in the alternative; the 2025 amendments have made them largely cumulative rather than mutually exclusive.

Finally, keep abreast of annual Gazette declarations adjusting the damages cap (s 32(3)) and maintain templates for concerns notices, offers to make amends, and complaints responses that track the statutory language verbatim. Compliance is no longer a matter of cautious wording alone; it requires technical platform design, documented decision-making, and rapid response protocols calibrated to the seven-day and 28-day statutory clocks that now dominate the regime.