A limited cyberattack caused disruptions at four major Iranian banks on June 14, 2026. The affected institutions were the National Bank of Iran, Bank Tejarat, Bank Saderat Iran, and Bank Tosee Saderat, also known as the Export Development Bank of Iran [1, 2].
The attack targeted the shared communication infrastructure connecting these banks, leading to interruptions in their financial services during the incident [1, 2]. Authorities confirmed there was no unauthorized access to customer information, and no data was deleted during the event [1, 2].
Technical teams responded immediately upon noticing the signs of the cyberattack, applying protective measures to contain the issue. They continue to work on recovery efforts and reinforcing security to prevent further disruptions [1, 2].
On the day of the attack, June 14, unusual activity was detected and quickly addressed by the banks' security units. Reports the same day detailed the service interruptions affecting the four banks' operations [1, 2].
The banks have not disclosed any details about the source or motive behind the attack. For now, their focus remains on restoring full functionality and securing their systems against potential future attempts.
