Financial Data Breach Claims

If your financial data has been lost, stolen, or otherwise compromised in a GDPR breach, we can help.

Get justice for a financial data breach violation

Our financial data is a lucrative target for hackers. But, in most cases, financial data breaches occur because of simple human errors and poor data security processes.

Cybercriminals are becoming increasingly sophisticated, and they are keen to exploit any weaknesses as they attempt to get at our personal and financial information.

But, if an organisation does everything possible to protect your data and has robust security processes and procedures, it is unlikely that an attack would be successful.

Nevertheless, too many organisations fail to take their data privacy responsibilities seriously. And, until they do, financial data breaches will continue to rise, with cybercriminals, human error, and poor data management/security responsible.

All kinds of organisations are experiencing financial data breaches. This includes:

  • Banks, credit cards and building societies. Keeping our data safe is a challenge for most organisations. And this is especially true of the financial sector which is witnessing a significant increase in data breaches.
  • Cryptocurrency businesses. Like traditional money, criminals are targeting the cryptocurrency market. With the equivalent of millions of pounds being stolen from cryptocurrency holdings each year, this is a very lucrative market.
  • Charities and donor organisations. Charities hold a lot of sensitive financial data, and this information must not fall into the wrong hands. However, all too often, charities either are not aware of their obligations or have not done enough to ensure that they meet them.
  • Businesses. Cybercriminals are targeting all kinds of companies or financial data. This is especially true of organisations that enable online purchases.
  • Solicitors (including conveyancers). Many solicitors – such as conveyancers – deal with large sums of client money. This can increase the risk of a data breach and prove devastating if sensitive data falls into the wrong hands.

If you have been a victim of a financial data breach, we can help you make a no-win, no-fee claim for compensation.

Contact us today for a free, no-obligation, assessment of your case.

Cases we handle at Keller Lenkner UK

At Keller Lenkner UK, our data protection lawyers deal with a wide range of financial data breach cases every day.

Keller Lenkner UK has gained an enviable reputation in data breach law. And, with a team of data breach experts led by Kingsley Hayes – arguably the UK’s foremost data breach solicitor – and considerable expertise in this field, it’s easy to see why. Here are just some examples of the financial cases our data protection lawyers have dealt with…

Neil’s* GateHub cryptocurrency wallet data breach

Neil lost £220k in the GateHub data breach. The theft was made possible as GateHub’s cybersecurity was deeply flawed on multiple levels.

Find out what happened in this case, and how to claim compensation from GateHub if you were impacted by this data hack.


Stephen’s* gym data breach

Criminals targeted Stephen’s gym in a cyber-attack. As a result of the attack, his personal and financial data was breached. This included his bank account information (account number and sort code). 

Whilst he has not yet been the victim of financial theft, Stephen is now at a greater risk of fraud, theft, and scams, and his emotional health has suffered as a result. 

We are helping Stephen claim compensation for the distress and data privacy suffered because of this breach. 

Marijke’s* credit provider data breach

Marijke took out credit from a reputable online provider. Cybercriminals targeted the company, and her personal data was accessed by the hackers.

As well as her name and contact details, the cybercriminals also got hold of her credit report information. Marijke is now a potential target for fraud and theft, and this has caused her significant emotional distress.

We are helping Marijke claim compensation for the distress and data privacy suffered because of this breach.  

*Names have been changed to protect client confidentiality.

Our current financal actions

In some cases, you won’t be the only person to experience an organisation’s data breach. In these instances, it might be worth joining a group action. Our current finance actions include:



In 2017, poor security processes at Equifax led to a huge data breach. The ICO has since fined Equifax £500,000 and people who have been affected by the breach can register to make a compensation claim.

Read More »
equiniti police


In August 2019, over 750 annual benefit statements were sent to the wrong postal addresses. These statements were for police officers of Sussex Police.
Equiniti, a company that provides support, communications and technology platforms to help manage company pensions, was responsible for distributing these statements.

Read More »

Why claim financial data breach compensation?

Hold organisations to account for failing to protect your private information.

Receive financial compensation for your losses.

Force organisations to implement better data security.

Financial cybercrime

As well as data breaches, there has been a rise in specific types of financial cyber-fraud. This includes:

Why use Keller Lenkner UK to make a claim?

We are one of the most experienced multi-claimant law firms in the UK.

We represent clients in group actions and individual cases with innovation, resources, and expertise.

We work with expert barristers to ensure you get the very best level of legal support available.

We have all the resources and global expertise necessary to take on complicated cases and win.

We have offices in Chancery Lane London, Birmingham and Liverpool, and the technology to provide a nationwide service, so we can help clients across England & Wales.

We use technology to deliver a better legal experience to our clients.

We work on a no-win, no-fee basis.

We make the process straightforward and hassle-free.


Latest news


Five facts about the Equifax data breach

The sensitivity of the personal information held by Equifax made its 2017 breach one of the most severe data privacy failures ever reported. If you were affected by the Equifax data breach, we can help you make a no-win, no-fee compensation claim.

Read More »

Serious data breach at Upstox

Indian stock trading firm Upstox has suffered a serious security breach. Reports claim that millions of customers – including those in the UK – could have had their personal information compromised after hacking group ShinyHunters targeted the business.

Read More »

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 loses

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.


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

  • 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.
  • 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.
  • 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.