Published by Global Banking & Finance Review®
Posted on June 18, 2025
2 min readLast updated: January 23, 2026
Add as preferred source on GoogleUBS suffered a data leak from a cyber attack on Chain IQ, affecting employee data but not client data. The incident was swiftly contained.
ZURICH (Reuters) -Swiss bank UBS on Wednesday said it had suffered a data leak due to a cyber attack against one of its providers, but that no client data was affected.
Swiss newspaper Le Temps said that files containing details of tens of thousands of UBS employees had been stolen from business service company Chain IQ.
"A cyber-attack at an external supplier has led to information about UBS and several other companies being stolen. No client data has been affected," UBS said.
"As soon as UBS became aware of the incident, it took swift and decisive action to avoid any impact on its operations."
Chain IQ said it and 19 other companies had been the target of a cyber-attack resulting in a data leak that was published online on the darknet. Steps and countermeasures were promptly taken and the situation is contained, it said in a statement.
Chain IQ also said it could not provide any information on potential ransom demands or interactions with the attackers for security and investigative reasons.
Le Temps reported that Swiss private bank Pictet had also been affected by the cyber attack. Pictet did not immediately reply to a request for comment.
(Reporting by Oliver HirtWriting by Dave GrahamEditing by Tomasz Janowski)
The data leak at UBS was caused by a cyber attack on one of its providers, Chain IQ.
No client data was affected by the cyber attack, according to UBS.
Swiss private bank Pictet was also reported to have been affected by the cyber attack.
UBS took swift and decisive action to avoid any impact on its operations as soon as it became aware of the incident.
Files containing details of tens of thousands of UBS employees were stolen from Chain IQ.
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