Finance

Nearly half a million customers hit by Lloyds IT glitch that exposed transaction data, committee says 

Published by Global Banking & Finance Review

Posted on March 27, 2026

2 min read

· Last updated: April 1, 2026

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Nearly half a million customers hit by Lloyds IT glitch that exposed transaction data, committee says 
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March 27 (Reuters) - Lloyds Banking Group exposed the personal data of up to 447,936 customers during an IT glitch earlier this month that allowed users to see other customers' transactions, including

Lloyds IT Glitch Exposes Nearly 448,000 Customers’ Data, UK Treasury Says

Details and Impact of the Lloyds Banking Group Data Breach

March 27 (Reuters) - Lloyds Banking Group exposed the personal data of up to 447,936 customers during an IT glitch earlier this month that allowed users to see other customers' transactions, including account details and national insurance numbers, Britain's Treasury Committee said on Friday.

The incident highlights the vulnerability of Britain's digital banking infrastructure, such as apps and websites, as lenders slash physical branch networks to cut costs and shift customers online.

Compensation and Customer Impact

  • Compensation Paid

    The bank has paid 139,000 pounds in compensation to 3,625 customers for distress and inconvenience, though no customers have suffered financial loss so far, according to a letter from Lloyds published by the committee.

  • Nature and Cause of the Glitch

    Lloyds said a software defect during an overnight update caused the breach, which affected customers at Lloyds, Halifax and Bank of Scotland, with 114,182 people clicking on transactions that revealed other users' personal information.

Regulatory Response

  • Treasury Committee's Actions

    Britain's cross-party Treasury Committee had requested further explanation from Lloyds earlier this month over the cause of the glitch that took place on March 12.

  • Required Updates from Lloyds

    Lloyds must provide updates to the committee within one month and after six months.

Reporting Credits

(Reporting by Yamini Kalia in Bengaluru; Editing by Sonia Cheema)

Key Takeaways

  • The glitch occurred during an overnight software update and caused mis‑displayed transaction data across digital banking apps, highlighting risks inherent in shifting from physical branches to online services (bfsiinsider.com).
  • Nearly half a million customers were affected, and over 114,000 clicked on transactions showing other users’ details; the bank has paid £139,000 compensation to 3,625 customers for distress and inconvenience, though no financial loss has been confirmed (dajon.co.uk).
  • The incident raises broader concerns about digital banking infrastructure resilience and mandates follow‑up reporting to the UK's Treasury Committee, with updates due within one month and again at six months (dajon.co.uk).

References

Frequently Asked Questions

How many customers were affected by the Lloyds IT glitch?
Up to 447,936 Lloyds Banking Group customers had their personal data exposed due to the IT glitch.
What type of data was exposed in the Lloyds breach?
Exposed data included transaction details, account information, and national insurance numbers.
Did customers suffer financial losses from the Lloyds data breach?
No financial loss has been reported so far due to the data glitch, according to Lloyds.
Which banks were affected by the Lloyds IT glitch?
The data breach impacted customers at Lloyds, Halifax, and Bank of Scotland.
What caused the Lloyds data exposure incident?
A software defect during an overnight update caused the data to be visible to other users.

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