Sound Financial subsidiary vendor exposed ~16,000 customer records via MOVEit; no compromise found yet

Sound Financial Bancorp, Inc.

Third-party vendor using MOVEit transferred data for Sound Community Bank's ~16,000 mobile/online banking customers.
Vendor's forensic investigation shows customer data was downloaded only once via a valid bank file request; no indication of compromise to date.
Bank notified law enforcement and regulators; vendor has patched the MOVEit vulnerability.
Company expects the incident will not have a material adverse effect on business, operations, or financial results.

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