M&S Data Breach

Important Information for Customers

KP Law is Taking Action

Were you affected by the M&S data breach? You may be entitled to compensation.

KP Law is now taking on claims from individuals whose data was compromised in the M&S cyber attack. Under UK data protection laws, organisations that fail to adequately protect your information can be held legally responsible.

KP Law is a specialist data breach law firm with a proven track record in securing compensation for victims of corporate cyber negligence.

What happened?

In April 2025, Marks & Spencer (M&S) was the target of a significant cyber attack. The breach disrupted online orders, impacted in-store contactless payments, and led to the unauthorised access of sensitive customer information.

While M&S has stated that no payment card details or passwords were stolen, other personal information—including names, addresses, contact details, and order history—was compromised.

What Information Was Accessed?

The following customer data may have been affected:

Full name
Date of birth
Home address
Email address
Phone number
Online order details
Masked payment card details

M&S reported the breach to the Information Commissioner’s Office and continues to work with the National Cyber Security Centre to investigate.

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Timeline of events:

22 April 2025

M&S systems are targeted in a cyber attack, leading to major service disruption.
25 April 2025

Online orders are suspended as M&S investigates the breach.
13 May 2025

M&S confirms that customer data was stolen. The Information Commissioner's Office is notified.
May 2025

KP Law begins taking registrations for a group legal action.

Key details:

Incident: M&S Data Breach
Date: April 2025
Affected Individuals: M&S online & in store customers
Data Compromised: Names, date of birth, addresses, emails, phone numbers, order details, masked card payment details
Legal Action: Group litigation for compensation

What Should You Do Now?

Reset Your Password

Make sure your M&S and other accounts use strong, unique passwords.

Watch For Scams

Be cautious of phishing emails or suspicious texts.

Monitor Your Credit

Look out for any unexpected activity on your accounts.

Why Choose KP Law

KP Law, a leading UK data breach law firm, is investigating the M&S data breach and is preparing a group action on behalf of affected customers. If you believe your personal data was compromised, you may be entitled to compensation. KP Law has extensive experience in handling data breach cases and is committed to holding companies accountable for failing to protect customer information.

How to join the claim:

Register your interest

If eligible, provide your details to register your interest.

Legal representation

Our team will guide you through the process and represent you on a no-win, no-fee basis.

Take action now:

If you believe your data was compromised in the Co-op breach, don’t wait. Join the group claim to seek the compensation you deserve.

What can you claim for?

While each case is judged on its own merits, there are some things we would typically look for when it comes to when claiming compensation following a data breach, cybercrime or other GDPR violation:

Financial loss

With stolen data, cybercriminals can make purchases using your bank and credit cards, apply for credit in your name, set up fraudulent bank accounts and access your existing online accounts.

Distress

GDPR failures, cybercrime and data breaches can have a significant impact on you, both mentally and physically. They can cause or exacerbate anxiety, stress and other psychological conditions.

Loss of privacy

Your data has value, and organisations must be held to account if they fail to protect your right to data privacy or otherwise do not uphold your GDPR rights.

How to protect yourself following a data breach or cybercrime

Protect your finances following a data breach or cybercrime

Contact your bank or credit card provider immediately if your financial data has been exposed.
Check all bills and emails for goods or services you have not ordered.
Check your bank account for unfamiliar transactions.
Alert your bank or credit card provider immediately if there is any suspicious activity.
Monitor your credit score for any unexpected dips.
Call Credit, Experian and Equifax to ensure credit isn’t taken out in your name.
Never provide your PIN or full password to anyone (even someone claiming to be from your bank).
Never been pressured into moving money to another account for fraud reasons. A legitimate bank won’t ask you to do this.

Watch out for further attacks and attempts to extract additional information from you

Follow the security instructions provided by the organisation that breached your data.
Never automatically click on any suspicious links or downloads in emails or texts.
Don’t assume an email or phone call is authentic just because someone has your details.
Be careful who you trust – criminals often use scare tactics to try and trick you into revealing your security details.
Know that, even if you recognise a name or number, it might not be genuine.
Don’t be rushed or pressured into making a decision. A trustworthy organisation would never force you to make a financial transaction on the spot.
Never provide your full password, pin or security code to someone over the phone (or via message). If a bank believes a transaction has been fraudulent, they will not ask for this information to cancel the transaction.
Listen to your instincts and ask questions if something feels “off”.
Refuse requests for personal or financial information and stop discussions if you are at all unsure.
Contact your bank or financial service provider on a number you know and trust to check if a communication is genuine.
Be cautious of unsolicited communications that refer you to a web page asking for personal data.
Don’t accept friend requests from people you don’t know on social media.
Review your online privacy settings.
Report suspected fraud attempts to the police and Action Fraud.

Put some data protection best practices in place to stop the threat from escalating

Register with the Cifas protective registration service to slow down credit applications made in your name.
Change your passwords regularly and use a different password for every account (a password manager can help with this).
Protect your devices with up-to-date internet security software.