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Data Breach Following a Cyberattack on the Federal Pension Fund

Bluewin.Ch • October 8, 2026

Following a cyberattack on a software vendor for the Publica pension fund, it remains unclear what data was compromised. (File photo)

Data was leaked in a cyberattack on an external software vendor for the federal pension fund Publica. It is still unclear exactly what data was affected. The Office of the Attorney General has launched an investigation, Publica announced on Thursday.

The software provider detected the attack in late September and subsequently filed a criminal complaint. The company also notified the relevant federal agencies, Publica, and other customers. It is currently working with various federal agencies to determine the extent to which the pension fund’s data has been affected.

Publica has since informed the insured individuals the data breach, its potential consequences, and the measures taken. According to the statement, other federal agencies do not have any business relationships with the affected software vendor.

Publica did not provide any further details regarding the supplier's identity or the nature of the data that was leaked.

Publica is one of Switzerland’s largest pension funds. Among others, it provides pension coverage for employees of the Federal Administration and the ETH Domain. As of the end of 2025, it had approximately 70,000 active members and 41,600 pension recipients. Total assets amounted to just under 45 billion Swiss francs.

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Data Leak at Swiss Pension Fund Publica Following Cyberattack on Supplier Publica, the Swiss federal pension fund, confirmed a data leak due to a cyberattack on an external software supplier. The attack was detected in late September, prompting the supplier to file a criminal complaint and notify federal authorities. The extent of the data compromised remains unclear, and an investigation by the Office of the Attorney General is underway. Publica has informed its members of the breach and its potential implications. As of the end of 2025, Publica had approximately 70,000 active members and 41,600 pensioners, with assets nearing 45 billion Swiss francs. The identity of the supplier and the specific data leaked have not been disclosed. This incident follows previous breaches involving federal data in Switzerland, raising concerns about the security of external vendors. 10 sources 36

Extracted Entities

Data Breach Following a Cyberattack on the Federal Pension Fund

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Extracted Entities

Attack Types (1)

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CWE Weaknesses (1)