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Swiss federal pension fund faces data breach after cyberattack

Swissinfo.Ch • October 8, 2026

Data has been leaked following a cyberattack on an external software supplier to the Swiss federal pension fund Publica. It is not yet clear exactly which data has been affected. The Office of the Attorney General has launched an investigation, announced Publica on Thursday.

The software supplier had detected the attack at the end of September and subsequently filed a criminal complaint. The company also informed the relevant federal authorities, Publica and other customers. The extent to which the pension fund’s data has been affected is currently being investigated in collaboration with various federal authorities.

Publica has since informed policyholders 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 software supplier in question.

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Publica did not provide any further details regarding the identity of the supplier or the nature of the data that had been leaked.

Publica is one of the largest pension funds in Switzerland. Among others, it insures employees of the Federal Administration and the Swiss Federal Institutes of Technology domain. At the end of 2025, it had around 70,000 active members and 41,600 pensioners. Its total assets amounted to just under CHF45 billion ($54 billion).

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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. 4 sources 36

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Swiss federal pension fund faces data breach after cyberattack

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