Widespread Service Disruptions Hit Eight Iranian Banks Following Cyberattack Claims

What happened

Iran International reports that at least eight Iranian banks, including Pasargad, Melli, Mellat, Sepah, Tejarat, Saderat, Tose’e Ta’avon, and Resalat, suffered widespread electronic and card-based service disruptions on Tuesday. Customers were reportedly unable to access key services such as mobile banking, internet banking, ATMs, and point-of-sale terminals.

Outside Brief is treating this as a source-led account. Any disputed responsibility, casualty figure, battlefield claim or single-source assertion should be treated as unconfirmed/hearsay unless confirmed by another reliable source or a named official. The outages followed a similar disruption ten days prior affecting four major banks—Melli, Tejarat, Saderat, and Tose’e Saderat—when a "limited cyberattack" on common communications infrastructure was officially reported by the Coordination Council of Banks. Authorities asserted then that no customer data had been accessed or deleted.

The Informatics Services Corporation, which provides core banking infrastructure and is partly owned by Iran’s Central Bank and commercial lenders, confirmed it temporarily took card-based services offline to prevent unauthorized access and protect customer data. Yet investigations have failed to identify the source of the attacks, with reports indicating service restoration could take up to two weeks according to an Iranian MP on the Economic Committee.

Known from the source

• Eight Iranian banks reported widespread service disruptions on Tuesday, affecting electronic and card-based services.
• Affected banks include Pasargad, Melli, Mellat, Sepah, Tejarat, Saderat, Tose’e Ta’avon, and Resalat.
• A similar outage targeted four banks on June 13, attributed by authorities to a ‘limited cyberattack’ on shared communications infrastructure.
• The Informatics Services Corporation stated it took card services offline to prevent unauthorized access.
• Iran’s Coordination Council of Banks and media outlets confirmed the disruptions.

What remains unclear

Repeated cyber-related outages in the Iranian banking sector have become more frequent amid ongoing conflict and heightened security concerns, raising questions about the resilience and security of Iran’s financial infrastructure. This latest disruption underscores vulnerabilities at a critical time for Iran’s economy, especially given concurrent internet restrictions and pressures on satellite communication services amid protests and regional tensions.

What remains unclear: Confirm whether the central claim is corroborated; until then treat it as unconfirmed/hearsay. Verification of the full list of affected banks and scope of service disruption from official Iranian sources. Confirmation that no customer data were accessed or deleted during these incidents beyond official statements. Independent verification that cyberattacks caused the outages rather than technical faults or other causes.

Evidence note

Outside Brief has kept this brief source-led and attributed. Claims should be read alongside the original source linked below.

Original source: Iran International. Open the source.