95 The authorities have provided guidance as to how a proceeding must continue once a claim of public interest immunity is upheld: see Gypsy Jokers Motorcycle Club Inc v Commissioner of Police (2008) 234 CLR 532 at [24] (per Gummow, Hayne, Heydon and Kiefel JJ); Assistant Commissioner Condon v Pompano Pty Ltd (2013) 252 CLR 38 at [148] (per Hayne, Crennan, Kiefel and Bell JJ); HT v The Queen at [29], [32] (per Kiefel CJ, Bell and Keane JJ) and [71]-[72] (per Gordon J). In summary, the following occurs:
(1) the documents and information in question need not be produced for inspection by any party to the proceedings;
(2) the documents and information in question cannot be adduced in evidence by any party, and they are denied to both the Court and the parties; and
(3) the substantive proceedings continue, in effect, without regard to the existence of the information over which public interest immunity has been successfully asserted.
96 Once a claim of public interest immunity is upheld, the documents are not to be disclosed, they are immune from production in the litigation and may not be used by any party or admitted into evidence. Importantly, any confidentiality regime or closed court approach to circumvent the immunity, to any degree, is not available. The confidentiality regimes canvassed by the Courts are appropriate to avoid practical injustice where documents, or information are to be admitted as evidence.
97 Having upheld the public interest immunity claim and taking into account the general position at common law, I do not consider that either of the approaches advanced by the applicant, i.e. the Closed Court Approach and the Judicial Examination Approach, are available to the Court in this case as the documents are immune from production. Notwithstanding, as the applicant made submissions directed towards the appropriateness of the approaches in the balancing exercise of the competing interests, I will briefly make some observations.
4.5.1 The Closed Court Approach
98 I have set out what this approach entails at [73] above. This approach was purported to be most desirable and beneficial by the applicant as it is said to confer the greatest degree of procedural fairness.
99 In considering the consequences on natural justice in the face of the public immunity claims, I have had regard to the findings of Tracey J in Sagar v O'Sullivan, a matter in which the public immunity claims were also upheld. There, his Honour held that even if the security assessments were not released to the applicants, the applicants could have inferred from the questions put to them during the extensive interviews they were made to participate in, matters which concerned their assessments: at [71] (per Tracey J). Unlike the circumstances in Sagar v O'Sullivan, the applicant here was never provided with an opportunity to participate in any interviews. Further, the matters raised during his wife's interview are classified and have not been disclosed to the applicant. As such, the ability for the applicant to infer relevant matters from the limited information before him has been impeded.
100 Acknowledging the gravity of the national security concerns, the applicant pressed for the confidential information to be disclosed only to his counsel. The applicant maintains that as the overall proceeding is concerned with judicial review, there is limited need for his legal representatives to seek his instructions in a manner that would compromise the confidential information were it disclosed to the applicant's counsel. Further, it was put that the chances of the applicant's counsel breaching any undertaking which could regulate the risk of disclosure to be extremely low. While the applicant concedes that none of his legal representatives currently hold the relevant security clearances, he drew attention to the fact that one of his counsel, Mr Sharify, previously held an NV1 level security clearance, which has since expired in 2019.
101 The majority in HT v The Queen observed that closed material procedures and public interest immunity procedures are fundamentally different, not least because the public interest immunity procedure respects common law principles of natural justice: at [32] (per Kiefel CJ, Bell and Keane JJ):
… If it is held that the documents should be produced, and thereby disclosed, they are available to both parties; if they are not to be produced they are not available to either and the court may not use them. There is no question of unfairness or inequality.
102 Nevertheless, despite the impacts on natural justice, no degree of production could be ordered where the Court could comfortably be assured that such disclosure could not reasonably compromise national security interests.
103 The applicant attempted to rely on the following three decisions to support the purported availability of the Closed Court Approach as a way to balance the public interests in public interest immunity claims: Mao v Commonwealth of Australia [2012] NSWSC 370 at [30] (per Beech-Jones J); Leghaei v Director-General of Security [2005] FCA 1576 at [101] (per Madgwick J) and Australian Statistician at [47] (per Steytler P, McLure JA and Newnes AJA).
104 Notwithstanding, the approaches adopted by the Courts in these decisions do not help the applicant here.
105 First, it has been acknowledged that while a panoply of orders can be made in the litigation process to protect relevant and admissible confidential information, these orders can easily be frustrated at a number of levels. This risk is further amplified by the fact that any confidential information provided without context cannot convey to the persons granted access to that information sufficient knowledge to accurately assess that material without leading to any compromise. Other risks, such as inadvertent disclosure and the possibility of counsel and solicitors inferring secrets from even the most basic level of disclosure of the confidential material, are all factors which heavily indicate that no degree of disclosure could satisfactorily protect the public interest in the confidentiality of the information: Australian Statistician at [41], [49], [50]-[52], [61] (per Steytler P, McLure JA and Newnes AJA).
106 Second, the facts in Leghaei v Director General are not relevant here. In that case, the Director-General adduced confidential evidence at the final hearing to prove that the gravamen of the security concern in relation to the applicant could not have been put to him. That proposition was relevant to resisting the allegation that there was a denial of procedural fairness arising from not having put the gravamen to him: at [52], [86], [88]-[89] (per Madgwick J). As the Director-General there had adduced confidential information, a regime had been put into place under which the applicant's lawyers were given access to the material. There was no public interest immunity claim made, such that the confidentiality regime adopted there could be considered.
107 Finally, in Mao v Commonwealth, Beech-Jones J considered two documents that would disclose confidential police methodologies. Whilst the public interest immunity claim was upheld over one of the documents, his Honour permitted the plaintiffs' lawyers to access the material: at [28] (per Beech-Jones J). His Honour rejected the public interest immunity claim over the second document because the interest in non-disclosure was outweighed by the interest in the administration of justice and it was possible and appropriate to give the plaintiffs' lawyers access. Importantly, it seems that there was a particular interest in the document not being disclosed to the plaintiffs (as distinct from their lawyers) because the document concerned a police method actually deployed in the plaintiffs' case and the first plaintiff was in "the very category of persons to whom this type of information should not be disseminated": at [28], [31] (per Beech-Jones J).
108 The Director-General submits that those considerations do not arise in the present case, because disclosure to the applicant's lawyers would still occasion significant prejudice to national security having regard to the nature and source of the national security information in question. This would be so even if counsel had security clearances. As Mr Noyes' evidence makes clear, the risk to national security arises not simply from the risk of disclosure to uncleared personnel.
109 Further, the Director-General contends, and I accept, that the Court has no power to grant a security clearance, and no power to require that any consideration be given to granting a security clearance. Leghaei v Director General, on which the applicant relies, was a case where the Director-General there had facilitated security clearances because the Director-General wished to adduce sensitive evidence.
110 The kinds of risks considered in Australian Statistician raise serious concerns about the security of the confidential information if it were disclosed to any persons. In my view, these concerns cannot be adequately addressed by any undertaking to the Court. Further, to compel disclosure on this occasion could set a dangerous precedent which may impede the operations of ASIO in the future, with potentially catastrophic impacts on national security.
111 In balancing the interests of national security against the public interest in the open administration of justice, I consider that the Closed Court Approach would not reduce the risks to national security discussed above. I consider that it would be highly prejudicial to the public interest (specifically Australia's national security) for the information in the documents to be disclosed even on a Closed Court Approach.
4.5.2 The Judicial Examination Approach
112 The proposed elements of the Judicial Examination Approach are set out at [74] above.
113 The applicant maintains that through this approach, the inquiry before the Court will be whether the Director-General had sufficient basis to not invite comment from the applicant on the Assessment.
114 In conducting its inquiry, the applicant says that the Court should be permitted to inspect confidential information over which public interest immunity has been claimed. To not do so, in the applicant's submissions, would allow the Director-General to escape accountability for his decision by mere assertions that it was effectively impossible to grant the applicant any procedural fairness whatsoever.
115 In advancing this approach, the applicant relies on the Full Court decision in Chu Sing Wun v Minister for Immigration & Ethnic Affairs (1997) 78 FCR 314 at 328 (per Carr and Sundberg JJ) where their Honours accepted the Judicial Examination Approach offered by the appellant there, finding that they could see no public interest which might be placed in jeopardy in adopting the approach and that the public interest will be served by having the case decided on the best available evidence.
116 For the same reasons as the previous approach, the Director-General maintains that the Judicial Examination Approach is also not available or appropriate for the Court to adopt.
117 The Director-General submits, and I accept, that the High Court in recent years has departed from the approach accepted by the majority in Chu v Minister and has since adopted the stance taken by Kiefel J (as her Honour then was) in dissent where her Honour held at 353 that, in her view, the Judicial Examination Approach was not appropriate:
... absent some reason for doubting the summary of factors which is said to have led the delegate to conclude that the requirement of good character was not met, these being the matters brought to the applicant's attention, the Court should not examine the material upon which it was founded. To do so would be to undertake an investigation and to assess what weight ought be given to pieces of information, without evidence or explanation from the delegate. On the view I have taken of the matter I do not consider it would have been correct for the primary judge to have viewed the material and I have refrained from doing so.
118 The High Court in HT v The Queen has made it clear that the Judicial Examination Approach, as propounded by the applicant, is not a proper way to approach public interest immunity claims. The remarks of the majority in the Supreme Court of the United Kingdom decision, Al Rawi v Security Service [2012] 1 AC 531 were considered in the High Court's observation that, if there was to be a change to the existing process for dealing with claims to public interest immunity, it would be necessary for Parliament to effect such change: at [31] (per Kiefel CJ, Bell and Keane JJ).
119 The Director-General drew attention to the enactment of regimes akin to a Judicial Examination Approach by Parliament, noting that it has done so only in carefully selected contexts. Thus, where merits review of adverse security assessment is available, the Administrative Appeals Tribunal can consider material in the absence of the applicant and their lawyers pursuant to express statutory authorisation: see SDCV v Director-General. Similarly, where the National Security Information (Civil and Criminal Proceedings) Act 2004 (Cth) applies, ss 29 and 38I permit the Court in certain circumstances to exclude a party from having access to evidence. These are specific contexts in which Parliament has determined that the risks associated with disclosure of national security information can be taken. The Director-General has correctly submitted that it is not for this Court to expand those categories.
120 Furthermore, the Director-General warns that adopting the Judicial Examination Approach on a final hearing still presents practical problems about keeping a record of the evidence and maintaining confidentiality of the information throughout any appeal process, which would potentially provide opportunities for inadvertent disclosure, diminishing any protection this material may have under the Judicial Examination Approach.
121 In balancing the interests of national security against the public interest in the open administration of justice, I consider that even the Judicial Examination Approach would not reduce the risks to national security discussed above. I consider that it would be highly prejudicial to the public interest (specifically Australia's national security) for the information in the documents to be disclosed even on a Judicial Examination Approach.