A ransomware group calling itself ShinyHunters claims to have carried out an attack on BOK Financial, with the claim reportedly posted on the group’s own leak site on August 22, 2026. This claim has not been independently verified by BreachLetter, has not been confirmed by BOK Financial, and has not been confirmed by any regulator. The listing was identified through ransomware.live, a security research platform that tracks and archives ransomware groups’ public leak-site postings.
What we know — and don’t
- A group identifying itself as ShinyHunters posted a claim referencing BOK Financial, dated August 22, 2026, on its leak site.
- BOK Financial operates in the finance sector.
- The specific types of data the group claims to have obtained have not been disclosed or confirmed anywhere in the listing reviewed.
- No official statement from BOK Financial confirming or denying the incident has been identified at this time.
- No regulatory filing or public disclosure related to this claim has been identified at this time.
What should you do if you have an account with this company?
- Change your account password, and avoid reusing that password anywhere else.
- Enable two-factor authentication (2FA) on your account if it is not already active.
- Watch closely for phishing emails, calls, or texts that reference this company or attempt to impersonate it.
- Avoid clicking links or downloading attachments from unexpected messages claiming to be from the company.
- Consider monitoring your accounts and personal information for unusual activity, and consider a service like a service like Aura or LifeLock that offers identity monitoring to help spot misuse early.
- Review recent account statements and login activity for anything unfamiliar.
BreachLetter will update this page if BOK Financial confirms this incident, if it is reported to regulators, or if further verified details become available.