Fintech data privacy 101: everything you need to know

The fintech market, integral to the overall finance sector, continues to push the envelope. Companies race to deliver faster payments and provide smart insights to their customers. But in doing so, they’re navigating a complex web of security risks and regulations.

In a world where cyberthreats evolve daily, the stakes couldn’t be higher. Prioritizing data isn't just a compliance checkbox anymore, but key to safety, customer trust, and brand integrity.

To show that, this page will explore what data privacy means for modern fintech companies, why it matters so much, and how you can integrate it into every layer of your business’s operations.

Why is data privacy important in the fintech sector?

The main reason data privacy has become crucial for the fintech industry lies in its operations. The majority of successful fintech companies today specialize in mobile banking, digital payments, and online lending, all of which involve processing Personally Identifiable Information (PII).

These companies store massive amounts of PII, such as credit card numbers, passwords, Social Security numbers, and bank account details, on their systems and networks to be able to provide services. And it’s this data category that has become the primary target for hackers and other cybercriminals looking for a way in.

Data breaches, which are now more common and sophisticated than ever, allow cybercriminals to steal, sell, or misuse sensitive information. Needless to say, the fallout can be devastating.

Identity theft, money laundering, financial fraud, and other cybercrimes threaten to ruin lives in an instant. And when that happens, fintech companies don’t just face financial losses, they lose what their business depends on most: their customers' trust.

Other data security threats in fintech

Besides traditional data breaches, there are a few other threats to data security fintechs face:

• Data leakage from third parties. Fintech businesses collaborate with a lineup of third-party companies for services like cloud storage, payments, and analytics. If even one of these partners has weak security, sensitive data can leak through their systems and endanger the fintech’s clients.
• Insider risks. Large fintech companies have numerous employees and contractors who have access to sensitive information. This means there’s an opportunity for data theft or misuse from the inside, whether intentional or accidental.
• Phishing and social engineering. Cybercriminals use fake emails, messages, and websites to trick regular users into disclosing their financial details or login credentials. These threats prey on human trust, generally targeting smaller-scale databases rather than exploiting technical vulnerabilities, but they’re not to be underestimated.

Regulations surrounding data protection in fintech

The growing cyber threats in the fintech industry and the data they hold have prompted regulators to tighten their rules. These companies are now held to higher standards than ever before. They have to comply with a range of regulatory frameworks, depending on the laws in the countries where their customers reside.

Some of the most notable data protection frameworks include:

• GDPR, or the General Data Protection Regulation, is the main regulatory framework in the EU. It requires companies to be transparent about what data they collect, how they use it, and who they share it with. It also gives individuals the right to access and request the erasure of their data at any time.
• PCI DSS, or the Payment Card Industry Data Security Standard, defines how businesses can access, store, process, and transmit credit card data. It sets technical and operational requirements like encryption, software design, 3DS environments’ security, and more.
• PSD2, or the Second Payment Services Directive, is an EU regulation that specifies how digital payments work in the European market. It enforces stronger customer authentication rules and requires banks to share their payment services and customer data with authorized third-party providers, fostering innovation and development of new financial products.
• GLBA, or the Gramm-Leach-Bliley Act, is a US federal law that mandates financial institutions to protect their customers’ non-public personal information (NPI). It sets transparency rules and gives customers the right to limit how their data is shared, while ensuring strong safeguards are in place.

Beyond these, there are numerous other state and country-based laws dedicated to protecting their citizens' sensitive data. They include CPPA (Canada), CPRA (California), PDPA (Singapore), PIPL (China), LGPD (Brazil), and many others.

Core principles of fintech data privacy

In light of the importance of data privacy, modern fintech companies strive to uphold the following principles:

• Lawfulness. They must collect, process, and share data in line with the regulatory frameworks applicable to their operations.
• Transparency. Fintech companies must clearly explain how they collect, process, and share data. They should handle information strictly in accordance with their policies and only for the purposes those policies define.
• Limitations. They should only collect the data that is absolutely relevant, adequate, and necessary for processing purposes, and nothing beyond that.
• Integrity. Fintechs must implement technical measures to protect the data their systems hold to prevent unauthorized access and loss.
• Accountability. They must take accountability for compliance with data protection principles, and adopt frameworks to make sure they’re consistently met across all their operations.

Data protection measures in fintech companies

Fintech companies rely on encryption, secure storage, access control, employee training, and consistent system monitoring to protect their databases. The sections that follow explain each in more detail.

Encryption

Data encryption is the process that renders your information unreadable to anyone without a special key. It’s a measure of protecting online data from unauthorized, third-party access, both while in transit and at rest.

The most commonly used encryption algorithm in fintech is AES due to its high security and real-time processing performance. It supports three key lengths (128, 192, and 256 bit), with longer keys offering stronger protection.

Safe storage

Fintech companies can store data in the cloud or on-premises data centers. Cloud storage is a more common choice because it provides full control over encryption keys, data backups, and redundancy strategies. It’s also more flexible, so it can scale up and down with your data storage needs.

Plus, its cloud storage is more accessible and cost-effective than building and maintaining an on-premises data center. You can rent it from a trusted hosting provider, like Liquid Web, and benefit from a high-performance infrastructure with robust security and compliance-ready features.

Access Control

Fintechs can prevent unauthorized parties from misusing sensitive information by implementing role-based access control. This security measure manages who can access data resources and under what circumstances. It’s reliant on methods like:

• User authentication, which verifies the user’s identity before granting them access
• User authorization, which grants permission based on the user’s role in the company, as well as the device they are using or the location they’re in when trying to access the data

Employee training

According to 2025 research, about 60% of data breaches involve the human element, underscoring the importance of data privacy in your workspace. Your employees, beyond just the security team, must understand how to handle sensitive information and recognize potential risks.

Educational courses, workshops, and briefings on the topic can go a long way in creating a security-conscious culture in your company.

System monitoring

To maintain safety, fintech businesses must monitor their system for vulnerabilities and threats. Here’s how they do this:

• Security information and event management (SIEM) solutions. These are software systems that collect and analyze logs and events in the company’s IT ecosystem. With the help of machine learning and logic rules, they can detect and respond to threats in real time.
• Established individual behaviors and system-wide security configurations. By setting standards for behavior on the network, they highlight anomalies, account compromises, and potential insider threats.
• Data risk assessments. Such programs help identify system flaws before they’re exploited by outside parties. Conducting them regularly mitigates vulnerabilities and operational disruptions.
• Updated software. Developers of antivirus software, intrusion detection systems, and firewalls regularly release updates to fix vulnerabilities and improve protection. Running the latest versions ensures that all available security measures are fully utilized.

Fintech and incident response planning

Even with every precaution in place, no system is completely immune to attacks. Cybercrime evolves by the day, and threats come in all forms, usually emerging when you least expect them. So, what is a fintech company to do when a security incident happens?

An incident response plan (IRP) can help reduce the effects and consequences of a security breach, regardless of its type. This is a strategy, usually put into written form and approved by the people in leadership positions in the company. It’s meant to establish how the organization should handle an incident and what steps it should take to recover from it.

A proper IRP assigns responsibilities to specific actors in the company and offers step-by-step instructions to prevent further damage and restore normal business operations.

Besides training your team, you can prepare them by adopting tools like forensic analysis software, incident management platforms, endpoint detection and response systems, and SIEMs.

Examples of fintech data breaches

Hearing that a major finance company has suffered a data breach is alarming, but it can also be a valuable lesson. If you get to know the details of what went wrong, you can learn from their mistakes, recognize the gaps in your data security system, and strengthen your defenses.

To that end, here are a few notable data breaches:

• First American Financial Corp had close to 900 million financial and personal records exposed in 2019. However, the issue wasn’t a sophisticated cyberattack but a single website design error. It could have been avoided had they only reviewed their code and monitored for data leaks with any of the numerous solutions on the market.
• Experian had 24 million customers and over 800,000 businesses’ data stolen because of a staff member’s mistake. In this 2020 data breach, a person posing as a representative of one of Experian’s clients convinced them to grant access to sensitive information. Better employee cybersecurity training could’ve prevented the threat.
• Block, formerly known as Square, had an ex-employee download reports containing data on over 8 million customers in 2021. Given that the employee was no longer with the company, a simple access control measure would likely have been enough for the company to avoid this data breach altogether.

Take data privacy precautions

Not only is keeping data private a legal and technical requirement for every fintech company, but it is also their primary responsibility. And with cybercrime on the rise, it’s more relevant than ever.

Learning about risks and data protection, adopting proactive security measures, and fostering a culture of awareness within your team has become crucial. While it takes time and effort, it can spare your company the financial setbacks, lost clients, and lasting damage to its reputation.

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