İzmir Military Espionage Case: A Legal and Human Rights Review

SRL Swiss presents a comprehensive legal and human rights assessment of the criminal proceedings involving police officers and other public officials following the İzmir military espionage investigation in Türkiye. Based on court judgments, hearing transcripts, procedural records and international human rights standards, the report examines the protection of fair-trial rights, the reliability of digital evidence, the effectiveness of defence safeguards, the justification of detention measures and the requirement of individual criminal responsibility.

The report places the proceedings within their broader judicial and institutional context. The original military espionage prosecution, involving military personnel and civilians, concluded with acquittals on 26 February 2016. Separate criminal proceedings subsequently concerned public officials involved in the earlier investigation. These proceedings raised questions about the relationship between professional responsibilities, alleged criminal conduct and the evidentiary standards required to establish individual guilt.

A central part of the analysis concerns the proceedings before the İzmir 2nd High Criminal Court, including its judgment of 29 May 2019, the regional appellate decision of 1 March 2021 and the Court of Cassation judgment of 7 February 2023. The report examines the different judicial outcomes while distinguishing first-instance convictions, acquittals, appellate findings and decisions requiring further judicial examination.

Particular attention is devoted to the right to prepare an effective defence. The documented proceedings include disputes concerning access to extensive case files, opportunities to examine digital records, restrictions affecting detained defendants and the availability of technical assistance. The assessment considers these issues under Article 6 of the European Convention on Human Rights, including the requirements of equality of arms, adversarial proceedings and adequate time and facilities for defence preparation.

The report also examines controversies surrounding digital evidence, including ByLock-related material, SD-card records, forensic imaging, data integrity, expert reports and requests for independent technical examination. It considers whether defendants were afforded meaningful opportunities to challenge the authenticity, reliability, interpretation and individual attribution of electronic evidence. The analysis distinguishes concerns expressed by defendants and their lawyers from procedural findings established in judicial records.

Another major issue concerns the principle of individual criminal responsibility. The report evaluates how official duties, administrative signatures, operational assignments, documentary records and alleged organisational links were treated in the criminal proceedings. It emphasises that criminal liability must be assessed through evidence relating to the conduct and legally required mental element of each individual, rather than through undifferentiated assumptions arising from professional position or institutional association.

The assessment further addresses detention and personal liberty. It reviews selected judicial records concerning arrest, continued detention, release and other measures restricting liberty, with reference to Article 5 of the European Convention on Human Rights. Particular importance is attached to the requirement that detention decisions be supported by sufficiently individualised and legally relevant reasons.

An accompanying annex provides structured information concerning 75 individuals identified in the first-instance judgment, including the distribution of judicial outcomes and selected defence submissions. The annexes also contain comparative legal analysis, procedural records and supporting references intended to make the findings of the main report more transparent and verifiable.

The international legal framework draws on European Court of Human Rights jurisprudence, United Nations human rights standards and OSCE commitments relating to judicial independence, the right to a fair trial, effective defence and the rule of law. Relevant principles concerning electronic evidence, criminal responsibility and protection against arbitrary deprivation of liberty are considered alongside the documented circumstances of the proceedings.

The report maintains an explicit distinction between allegations, defence submissions, established judicial findings and independent legal assessment. It does not assume that every procedural objection establishes a violation of the European Convention on Human Rights. Nor does it claim to determine the current legal or custodial status of all individuals following appellate and cassation proceedings. Subsequent developments require separate case-specific verification.

Through this study, SRL Swiss seeks to contribute to informed public examination of criminal justice practices, the protection of procedural safeguards and the implementation of international human rights obligations. The report underscores the importance of transparent judicial reasoning, meaningful access to evidence, independent adjudication and the individual assessment of criminal responsibility in proceedings involving allegations of serious offences.

Read the Full Report (PDF)

Download Supporting Annexes A–D (PDF)

SRL Swiss — Security Studies and Rule of Law Association

Geneva, Switzerland | October 2026