Tracking showed a surge in reports for Halifax and Lloyds users, though the exact scale of impact remained unknown.

Lloyds Banking Group acknowledged a disruption in which some customers’ transaction information from other accounts appeared in their internet banking and mobile app, and the issue was quickly identified and resolved after an apology.

Bank of Scotland confirmed an investigation into the incident and suggested a possible technical glitch as the cause, with multiple users reporting cross-account visibility.

Customers described seeing transactions with personal details, including names and, in some cases, National Insurance numbers, causing alarm as the flaw surfaced across accounts.

The incident followed prior outages affecting the same group’s apps earlier in the year, raising calls for greater resilience.

This was treated as breaking news with ongoing updates and advisories to refresh the page for the latest information.

By mid-morning, hundreds of social media posts and a public thread drew attention to cross-account visibility, with users sharing examples and concerns about identity exposure.

Affected users reported seeing varied personal data across logins and urged heightened privacy concerns while the flaw was active.

Several customers noted data changing when logging out and back in, fueling worries about exposure of sensitive information.

Public concern grew about banking platform security, with some labeling it a serious data breach while media outlets described it as a developing story.

Some customers saw transactions dating back to 2024, prompting social media discussion from consumer figures, including Martin Lewis and MoneySavingExpert.

Downdetector UK logged hundreds of outage reports between early morning hours, with uncertainty over how many customers were affected.