
Political Turmoil: 4.7 Million Users’ Data Allegedly Leaked To Two Foreign Countries Via The “Istanbul Senin” App
ISTANBUL, Turkey – The ongoing corruption and financial irregularity investigation targeting Istanbul Metropolitan Municipality (IMM) affiliates has reached a new and striking phase. A critical detention order was issued based on the allegation that personal data belonging to millions of users was illegally leaked through the “Istanbul Senin” (Istanbul Is Yours) mobile application, developed by the IMM. The suspect detained was identified as holding a senior IT official position within the Republican People’s Party (CHP).

📝 FOCUS OF THE INVESTIGATION: DATA BREACH AND ORGANIZED LEAK
The investigation, conducted by the Istanbul Chief Public Prosecutor’s Office’s “Bureau for the Prevention of Terrorism Financing and Money Laundering Crimes,” involves charges that concern not only financial misconduct but also national cybersecurity.
- Volume of Leaked Data: The investigation centers on the unauthorized acquisition of sensitive personal data (names, contact information, addresses, and potentially location data) belonging to approximately 4.7 million Istanbulite users of the “Istanbul Senin” app.
- International Connection: Allegations suggest that the data was not only stolen but was systematically compiled and transferred to specific individuals or entities in two different foreign countries. The Chief Public Prosecutor’s Office is investigating this as a potential case of “cyber espionage” or “international data theft.”
- Grounds for Detention: The detained CHP IT official is alleged to have played an active role in managing this critical data flow or directly facilitating the breach.
🏛️ POLITICAL AND LEGAL REPERCUSSIONS: TENSIONS AT THE HIGHEST LEVEL
The detention and the scale of the data leak immediately escalated political tensions in Ankara.
- Political Dimension: The fact that the detained person held a position close to the CHP General Headquarters amplified the political aspect of the probe. The ruling party faction immediately accused the opposition of “selling voter data to foreign intelligence.” The CHP General Headquarters, conversely, claims the allegations are baseless and the incident is a politically motivated conspiracy.
- Legal Consequences: The IMM Corruption Investigation involves the most serious violation clauses of Law No. 6698 on the Protection of Personal Data (KVKK). Therefore, if the charges are proven, the suspect faces potentially severe prison sentences and record administrative fines under cybercrime and organized crime statutes. This action, which compromises public trust, could set a major precedent for the Turkish judiciary.

🌐 THE BLOW TO DIGITAL SECURITY AND MUNICIPAL RESPONSIBILITY
The “Istanbul Senin” application was a crucial tool for citizens accessing public services. The allegation that the personal data of millions of users was so easily compromised has created a major crisis of confidence in the digital infrastructure provided by local governments.
- Trust Crisis: Citizens are deeply worried about whether the applications they use for essential services can truly safeguard their personal information.
- Demands for Internal Audit: Consequently, political and legal pressure is mounting on the IMM administration and the relevant party management to launch a detailed and independent internal investigation into how data security protocols were implemented.
The IMM Corruption Investigation and the accompanying data leak scandal will necessitate an urgent review and implementation of stricter rules for the oversight and cybersecurity standards of digital platforms in Turkish local administrations.



