Contemporary fintech took shape after the 2008 global financial crisis. Today, apps such as Venmo, Robinhood, Chime, PayPal, and MoneyLion help people manage money from their phones. Contactless payments, mobile banking, micro-investing, and online lending make everyday services easier to access. A growing digital finance company can reach customers in new ways, but that convenience brings greater responsibility.
These platforms hold financial accounts, payment records, and personal data, making them tempting targets for attacks. Phishing and other threats can expose customer data or block access to systems. Data breaches may lead to fraud and weaken customer trust. In 2017, the Equifax breach affected 143 million people, showing how one incident can cause lasting harm.
Strong security matters for both customers and companies. This guide explains fintech cybersecurity risks and practical protection, from risk reviews and information inventories to encryption, API controls, monitoring, compliance, and testing. It also explores how customer education can help people spot threats and support trust in digital services.
Understand the Cybersecurity Risks Facing Fintech Companies
Fintech cybersecurity risks include attacks on people, software, and vendors. One cited study found that 40% of firms had a cyber incident in the prior year. It also reported a 300% rise in ransomware attacks.
Recognize phishing, account takeovers, and ransomware threats
Phishing can trick people into sharing passwords. Criminals may use stolen credentials to take over accounts or lock systems with ransomware. In 2021, CNA Financial paid $40 million after a ransomware attack.
Assess data breach, insider, and supply chain risks
Human error and vendor weaknesses can expose sensitive data, especially when companies rely on outside services. Equifax’s 2017 breach affected 143 million people. Capital One exposed information from more than 100 million customers in 2019.
Identify API vulnerabilities and business logic flaws
Weak authorization can grant access to records or let users misuse normal features. Regular testing helps find these gaps before attackers do.
| Incident | Reported exposure or impact | Risk illustrated |
|---|---|---|
| Venmo, 2019 | Public API exposed 200 million transactions | Unprotected endpoints |
| Coinbase, 2022 | Password-reset flaw affected about 6,000 customers | Account verification weakness |
| Revolut, 2022 | Authorization gaps exposed over 50,000 records | Access control vulnerabilities |
Map the Financial Data and Systems You Need to Protect
A clear map helps fintech companies see where financial data moves and where security gaps may arise. It also supports compliance and gives teams a practical starting point for reducing risk.
Inventory customer data, card data, accounts, and transactions
Record customer names, addresses, security answers, bank accounts, card data, and transaction records. These details may sit in different applications, so note where each item is stored and who can access it. Collecting only what services need can limit exposure.
Review applications, APIs, vendors, and legacy integrations
Map systems that handle statements, wire transfers, and loan applications. IDOR vulnerabilities can expose these records when attackers change API identifiers. Include vendors and older banking integrations, since undocumented endpoints can create hidden risks.
- List each API, owner, endpoint, and data flow.
- Use PCI DSS 4.0 API inventory guidance as a reference.
- Track where sensitive data is stored, processed, and sent.
This cybersecurity inventory strengthens data protection and helps teams spot breaches before they spread.
| Asset | Examples | What to record |
|---|---|---|
| Customer records | Names, addresses, security answers | Storage locations and access |
| Financial systems | Accounts, card data, transactions | Data flows and API identifiers |
| Connected services | Vendors, APIs, legacy integrations | Owners, endpoints, and dependencies |
How fintech cybersecurity Protects Sensitive Information
Strong safeguards protect private records while allowing people to use digital financial services. Encryption, careful permissions, and identity checks work together to reduce the risk of misuse.
Encrypt financial information in transit and at rest
Encryption makes data harder to read if someone intercepts it or gains access to stored files. PCI DSS 4.0 requires encryption in transit for applicable payment data and includes authentication controls. These cybersecurity practices support compliance and help protect customer data.
Apply access controls and multifactor authentication
Multifactor authentication (MFA) pairs a password with a fingerprint or a one-time code sent to a mobile device. PSD2 and Open Banking use Strong Customer Authentication to add verification for sensitive account and payment requests. In the United States, NYDFS 23 NYCRR 500 includes MFA for API access.
Set permissions by job role, then check access for each resource. A successful login alone should not grant broad access to systems or accounts. These security measures can make unauthorized activity harder.
| Control | Purpose | Example |
|---|---|---|
| Encryption | Protects stored and moving data | Encrypt payment data in transit |
| MFA | Strengthens identity checks | Password plus fingerprint or code |
| Role-based access | Limits access to needed resources | Grant permissions by job duty |
Secure APIs, Mobile Apps, and Third-Party Integrations
APIs link financial apps with banks, payment networks, and outside services. Each connection can create a path to sensitive data if teams overlook access rules. Thoughtful design helps fintech cybersecurity teams reduce that risk while keeping useful services available. For context on changing payment tools, explore payment innovations.
Past incidents show why every request needs careful review. Venmo’s 2019 public API settings exposed 200 million transactions. Revolut’s 2022 authorization gaps exposed more than 50,000 customer records. Coinbase’s 2022 password-reset flaw affected about 6,000 customers.
Verify authorization for each account and transaction
Authentication confirms who signed in, but it does not prove that person can view every record. Check object-level permissions on each request, then confirm the user can reach the specific account or transaction. Strong verification can help close common vulnerabilities.
Manage credentials, dependencies, and hidden endpoints
Use these safeguards to protect mobile apps, APIs, and integrations:
- Protect password resets with robust identity checks and authentication.
- Inventory third-party dependencies, shadow APIs, and undocumented endpoints to limit supply chain risks.
- Encrypt connections with TLS 1.3 or TLS 1.2 and strong cipher suites. Use HSTS to help block downgrade attacks.
- Include API permissions and integrations in regular testing and compliance reviews.
These steps help teams apply consistent security controls across connected systems and reduce exposure to attacks.
Monitor Transactions and Respond to Suspicious Activity
Fast alerts can help financial platforms spot trouble before it disrupts daily operations. For fintech cybersecurity teams, live monitoring adds an important layer of protection.
Flag unusual account and payment behavior
AI and machine learning can study normal activity and flag sudden changes. A new device, a burst of transfers, or unusual access to accounts may call for review. PSD2 and Open Banking guidance includes transaction monitoring among API security measures.
Keep detailed logs of API requests, including headers, parameters, and response codes. These records help teams trace suspicious activity, identify affected systems, and assess whether financial data may be at risk. Strange API traffic can signal data theft or ransomware attacks; CNA Financial paid $40 million after a 2021 ransomware incident.
- Investigate alerts and confirm whether activity is legitimate.
- Protect the account by limiting access or pausing risky transactions.
- Tell the customer what happened and explain clear next steps.
These steps help reduce threats, phishing risks, and service disruption while supporting reliable security and fintech operations.
Meet Compliance Requirements and Strengthen Customer Trust
Clear rules help financial services protect customer information and show accountability. For fintech companies, fintech cybersecurity means meeting the standards that apply to their services and operations.
PCI DSS applies to organizations that accept, process, or store card data. PCI DSS 4.0 calls for API inventories, authentication controls, encryption in transit, and vulnerability scans. Violations may cost up to $100,000 per month.
GDPR requires explicit consent and strong data protection. Fines can reach 4% of global revenue. Covered firms under NYDFS 23 NYCRR 500 must use controls such as multifactor authentication, penetration testing, and audit trails.
Consistent compliance lowers risk and can limit breaches. It also helps banks, customers, and partners see how a company handles information. Open records of controls and incidents support customer trust.
| Framework | Key expectation | Potential consequence |
|---|---|---|
| PCI DSS 4.0 | Document APIs and scan for vulnerabilities | Violations may reach $100,000 per month |
| GDPR | Obtain explicit consent and protect data | Fines may reach 4% of global revenue |
| NYDFS 23 NYCRR 500 | Use MFA, penetration tests, and audit trails | Enforcement may follow noncompliance |
Make Security Testing and Customer Education Routine
Routine reviews and clear guidance help fintech companies find weak points before they lead to loss. A steady plan can reduce cybersecurity risks and support trust in digital services.
Run scans, penetration tests, and security audits
PCI DSS 4.0 includes vulnerability scanning for APIs. Scan after each code change, then use penetration tests to find gaps that automated tools may miss. NYDFS 23 NYCRR 500 also includes penetration testing and audit trails. Check business logic and user access, since an IDOR flaw may expose transactions or loan applications.
- Review API systems and record each test result.
- Retest fixes to confirm they work as intended.
Teach people to spot social engineering
Train staff to handle suspicious requests and protect customer data. Teach customers to spot phishing messages, use strong passwords, and follow safe authentication practices. These simple habits can limit threats and attacks. Machine learning tools may flag unusual activity, but people still play a key role in fintech security and other cybersecurity measures.
| Practice | When to use it | What it helps find |
|---|---|---|
| Vulnerability scan | After code changes | Known software and API weaknesses |
| Penetration test | On a planned schedule | Gaps attackers could exploit |
| Customer education | During account use | Phishing and unsafe password habits |
Conclusion
Digital finance depends on safeguards that work together. Venmo’s 2019 API exposure affected 200 million transactions and showed how weak controls can expose customer data. Fintech cybersecurity risks call for layered protection, not a single tool.
Keep an up-to-date system inventory, check authorization for every request, and test systems often. Revolut’s 2022 incident exposed more than 50,000 records. Encryption and multifactor authentication help protect information. NYDFS 23 NYCRR 500 requires MFA for API access at covered firms.
Monitor transactions and prepare a response plan for attacks. CNA Financial paid $40 million after a 2021 ransomware incident, underscoring the cost of delayed action. Ongoing compliance and clear customer education can reduce breaches and help keep financial services safe. For fintech teams, steady cybersecurity practices protect data and strengthen trust in digital services.