NewsBanking & FintechHighCB Financial Services Discloses Landmark SEC Form 8-K Breach Triggered by Unauthorized Shadow AI Tool UsageCB Financial Services files historic SEC Form 8-K Item 1.05 after an employee used an unauthorized AI tool to process non-public customer PII and SSNs.CST Newsroom·24 Sep 2026, 00:00 IST·15 min read