Introduction
Cybersecurity obligations for fintech companies in Turkey have become a central part of financial regulation. Fintech businesses are no longer judged only by the speed of their applications, the quality of their user experience, or the innovation of their payment, wallet, banking, or crypto products. They are also expected to prove that their systems are secure, resilient, auditable, and capable of protecting customer funds, financial data, personal information, transaction records, and digital assets.
This is especially important because fintech companies operate in a high-risk environment. Payment institutions process fund transfers, electronic money institutions hold wallet balances, digital banks operate without traditional branches, Banking-as-a-Service platforms rely on APIs and outsourced interfaces, open banking providers access account information, and crypto asset service providers may control private keys or customer crypto assets. A single cyber incident can therefore lead to financial loss, unauthorized transactions, data breaches, regulatory sanctions, customer claims, criminal complaints, reputational damage, and loss of banking relationships.
Turkey’s cybersecurity framework is now based on several layers of regulation. These include the Cybersecurity Law No. 7545, sector-specific rules issued by the Central Bank of the Republic of Türkiye, the Banking Regulation and Supervision Agency, the Capital Markets Board, personal data protection rules under the KVKK, anti-money laundering obligations under MASAK legislation, and contractual requirements imposed by banks, payment partners, card schemes, cloud providers, and investors. Cybersecurity Law No. 7545 entered into force in March 2025 and introduced a broad cybersecurity framework covering public and private actors operating in cyberspace.
For fintech companies, cybersecurity is not merely an IT department issue. It is a legal, regulatory, operational, and strategic issue. A fintech company must build cybersecurity into its corporate governance, product architecture, customer onboarding, transaction monitoring, vendor contracts, incident response plan, data protection system, audit program, and board-level risk management.
This article explains cybersecurity obligations for fintech companies in Turkey, including the legal framework, sector-specific duties, data protection requirements, incident response, outsourcing, cloud systems, crypto custody, API security, customer authentication, audits, and practical risk management.
1. Why Cybersecurity Is Critical for Fintech Companies
Fintech companies are attractive targets for cyberattacks because they process money, assets, identity documents, financial data, transaction histories, authentication credentials, and personal information. Attackers may target fintech platforms to steal funds, obtain customer data, manipulate transactions, access crypto wallets, exploit APIs, compromise administrator accounts, or use stolen data for fraud.
Cybersecurity risk is higher in fintech than in many ordinary digital businesses because fintech services often involve real-time financial movement. A cyber incident in an e-commerce website may expose customer contact data. A cyber incident in a fintech application may allow unauthorized transfers, wallet withdrawals, account takeover, merchant settlement manipulation, crypto asset theft, or large-scale fraud.
Common cybersecurity risks in fintech include:
Unauthorized access to customer accounts
Account takeover through phishing or credential stuffing
API vulnerabilities
Weak customer authentication
Compromised administrator accounts
Cloud misconfiguration
Data breaches involving identity documents
Malware or ransomware attacks
Insider misuse
Payment instruction manipulation
Crypto private key compromise
Fraudulent wallet withdrawals
Inadequate transaction monitoring
Third-party vendor breaches
Mobile application vulnerabilities
Denial-of-service attacks
Failure of backup or disaster recovery systems
Because of these risks, cybersecurity must be treated as part of financial compliance. Regulators, courts, customers, and business partners will expect fintech companies to show that they took reasonable, proportionate, and sector-appropriate security measures.
2. Main Legal Framework for Fintech Cybersecurity in Turkey
Cybersecurity obligations for fintech companies in Turkey do not come from a single law. Instead, they arise from several overlapping legal sources.
The first layer is Cybersecurity Law No. 7545, which entered into force in March 2025. This law created a broad cybersecurity framework and applies to public institutions, private legal entities, professional organizations, individuals, and other actors operating in cyberspace. It also strengthened institutional oversight and established the Cybersecurity Presidency as a central authority in the cybersecurity ecosystem.
The second layer is sector-specific financial regulation. Payment institutions and electronic money institutions are regulated under Law No. 6493 and CBRT secondary rules. Banks, digital banks, and Banking-as-a-Service structures are subject to BRSA banking information systems rules. Crypto asset service providers are subject to CMB crypto asset regulations and information systems obligations. The BRSA regulation on bank information systems sets minimum procedures and principles for information systems management, electronic banking services, risk management, and information systems controls.
The third layer is personal data protection law. Under Law No. 6698 on the Protection of Personal Data, data controllers must ensure appropriate security of personal data and notify the Personal Data Protection Board and affected persons if personal data is obtained by others through unlawful means. The KVKK’s official guidance also refers to a 72-hour notification approach for data breach notifications to the Board.
The fourth layer is AML and financial crime compliance. MASAK rules require fintech companies falling within obliged-party categories to retain records, monitor transactions, identify customers, and report suspicious transactions. Cybersecurity and AML are connected because cyber fraud, account takeover, stolen identities, mule accounts, illegal betting proceeds, and crypto laundering often appear through transaction systems. Turkey has continued increasing AML scrutiny over payment and crypto sectors after its FATF grey-list exit.
The fifth layer is contract law. Banks, payment partners, card networks, cloud vendors, KYC providers, crypto custody providers, investors, and business customers often impose cybersecurity standards through contracts. A fintech company may therefore be liable not only to regulators but also to commercial partners if it fails to meet agreed security standards.
3. Cybersecurity Law No. 7545 and Its Impact on Fintech
Cybersecurity Law No. 7545 is a significant development for all companies operating through information systems in Turkey. It is especially important for fintech companies because they provide digital financial services, process sensitive data, and may be part of critical financial infrastructure.
The law broadly applies to public and private sector actors operating in cyberspace. Legal analyses published after the law entered into force emphasize that it aims to protect public institutions, private entities, individuals, and critical infrastructure from cyber threats, while also establishing cybersecurity strategies, policies, and oversight mechanisms.
For fintech companies, the practical impact is that cybersecurity can no longer be treated as a purely internal technical issue. Companies must expect increasing regulatory attention regarding cyber risk assessments, incident reporting, compliance with cybersecurity standards, cooperation with competent authorities, and protection of critical information systems.
As of the latest available commentary, certain implementation details under Cybersecurity Law No. 7545 may depend on secondary regulations. This means fintech companies should monitor new cybersecurity regulations closely and update internal policies as the implementation framework develops.
4. Cybersecurity Duties of Payment and Electronic Money Institutions
Payment institutions and electronic money institutions face strict cybersecurity expectations because they process payment transactions, wallet balances, merchant settlements, customer identity data, and transaction records. Their systems must be secure, available, auditable, and resistant to fraud.
The CBRT’s payment services framework includes rules on payment services, electronic money issuance, payment service providers, information systems, and data sharing services. The CBRT Annual Report for 2024 confirms that payment and electronic money institutions are subject to independent financial audit and information systems audit obligations, and notes that 26 payment institutions and 63 electronic money institutions were operating in Turkey as of 31 December 2024 under Law No. 6493.
Payment and e-money companies should therefore establish cybersecurity controls covering:
Secure payment transaction processing
Strong customer authentication
Fraud monitoring
API security
Encryption
Transaction logging
Wallet balance protection
Segregation of customer funds and operational systems
Access controls
Incident response
Business continuity
Disaster recovery
Vendor risk management
Information systems audits
Secure software development
For electronic money institutions, cybersecurity is directly connected to customer fund protection. If attackers manipulate wallet balances, compromise accounts, or execute unauthorized transfers, the issue becomes both a cyber incident and a financial liability problem.
5. Cybersecurity Duties of Digital Banks and BaaS Models
Digital banks and Banking-as-a-Service models have high cybersecurity obligations because they rely almost entirely on electronic channels. A branchless bank cannot rely on traditional branch-based identity verification, customer support, and transaction control mechanisms. Its security architecture must replace the protective function that physical branches historically provided.
The BRSA regulation on information systems and electronic banking services sets minimum rules for information systems management, electronic banking services, risk management, and information systems controls. This regulation is especially relevant for digital banks, mobile banking platforms, electronic banking channels, and BaaS interfaces.
The BRSA’s digital banking regulation also governs branchless banks and Banking-as-a-Service models. It requires digital banking and BaaS structures to operate within a regulated framework, including secure electronic service delivery and proper allocation of responsibility between service banks and interface providers.
Cybersecurity issues in BaaS models are particularly complex because the customer may interact with an interface provider while the actual banking service is provided by a licensed bank. This creates shared risk around API security, authentication, data transfer, transaction security, customer notifications, and incident response.
A BaaS cybersecurity program should address:
Responsibility between service bank and interface provider
API authentication and authorization
Customer identity verification
Secure mobile application design
Protection of customer secrets
Audit rights of the service bank
Regulatory access to systems and records
Incident notification between parties
Business continuity and fallback procedures
Termination rights for security failures
Data localization and backup obligations where applicable
If a BaaS interface suffers a breach, customers may blame both the platform and the bank. Therefore, contracts must clearly allocate responsibilities, but operational security must also be strong enough to prevent disputes from arising.
6. Cybersecurity Duties of Crypto Asset Service Providers
Crypto asset service providers face some of the highest cybersecurity risks in fintech. A cyber incident at a crypto exchange or custody provider may result in irreversible asset loss. Unlike traditional bank transfers, blockchain transactions may not be reversible after execution. This makes private key management, wallet infrastructure, internal approval controls, and incident response especially important.
The CMB published major secondary regulations in 2025 concerning crypto asset service providers, including rules on establishment, operating principles, activities, and capital adequacy. The CMB communiqués regulate crypto asset service providers and place the sector within a formal supervisory framework.
Legal updates on the CMB’s information technology rules for crypto asset service providers state that the relevant information systems framework entered into force on 30 June 2025 and includes obligations on information systems resilience, primary and secondary systems in Turkey, and internal audits by persons with information systems independent audit licenses within the applicable transition periods.
Crypto cybersecurity controls should include:
Cold wallet and hot wallet segregation
Multi-signature authorization
Private key generation and storage policies
Hardware security module use where appropriate
Withdrawal approval workflows
Internal transfer limits
Blockchain monitoring
Wallet address whitelisting
Access control for privileged users
Penetration testing
Continuous vulnerability monitoring
Incident response for asset theft
Customer notification procedures
Custody reconciliation
Separation of customer assets and platform assets
Audit trails for every transfer
Crypto platforms must also address phishing, SIM swap attacks, fake customer support scams, account takeover, malicious browser extensions, and social engineering. Customer education is not enough; platforms must implement technical controls to reduce fraud.
7. KVKK Data Security Obligations and Data Breach Notification
Fintech cybersecurity is closely connected to personal data protection. A fintech company may suffer two types of harm in a cyber incident: financial harm and personal data breach harm. If attackers access identity documents, wallet information, payment history, bank account data, transaction records, or KYC files, the company may face obligations under KVKK.
Law No. 6698 requires the data controller to notify the data subject and the Personal Data Protection Board if processed personal data is obtained by others through unlawful means. The KVKK’s official data security guidance states that where notification cannot be made within 72 hours, reasons for the delay should be attached to the notification made to the Board without undue further delay.
A fintech data breach response plan should cover:
Detection of unauthorized access
Containment of affected systems
Assessment of personal data categories involved
Legal analysis of notification duties
Notification to the KVKK where required
Notification to affected persons where required
Preservation of logs and evidence
Coordination with vendors
Customer support messaging
Regulatory communications
Remediation and security improvement
Post-incident board reporting
Data breach enforcement in Turkey is not theoretical. In 2024, Reuters reported that the Turkish Personal Data Protection Board fined Amazon’s Twitch platform after a data leak, citing inadequate security measures and insufficient risk and threat assessments, as well as failure to report the breach. Although Twitch is not a fintech company, the case demonstrates the seriousness with which Turkish authorities may treat data security failures.
8. Cybersecurity Governance and Board Responsibility
Fintech companies should treat cybersecurity as a board-level issue. Cybersecurity governance should not be limited to technical staff. The board and senior management should understand key risks, approve security policies, allocate budget, oversee incident response, and ensure regulatory compliance.
A strong cybersecurity governance framework should include:
Board-approved information security policy
Chief information security officer or equivalent function
Clear reporting lines
Risk assessment procedures
Internal control mechanisms
Periodic security reports
Independent audits
Incident escalation matrix
Vendor risk management
Employee training
Business continuity governance
Regulatory update monitoring
The larger and more regulated the fintech company is, the more formal this governance structure should be. Payment institutions, e-money institutions, digital banks, BaaS platforms, and crypto asset service providers should be able to demonstrate governance maturity during audits, licensing reviews, investor due diligence, and regulatory inspections.
9. Access Control and Authentication
Access control is one of the most important cybersecurity obligations in fintech. Many incidents occur not because systems lack sophisticated technology, but because access rights are excessive, administrator accounts are weakly protected, or employee credentials are compromised.
Fintech companies should implement:
Role-based access control
Least privilege principle
Multi-factor authentication
Privileged access management
Segregation of duties
Periodic access reviews
Immediate removal of access after termination
Monitoring of administrator activity
Strong password and session rules
Secure remote access policies
Device management controls
Customer authentication is equally important. Payment apps, wallets, crypto platforms, and digital banking channels must protect customers from account takeover. Depending on the service, controls may include strong customer authentication, biometric verification, device binding, transaction signing, behavioral analytics, risk-based step-up authentication, and suspicious login alerts.
10. Secure Software Development and API Security
Fintech products are software products. Therefore, secure software development is a legal and operational necessity. Vulnerabilities in code, APIs, mobile applications, SDKs, admin panels, and integrations can create direct financial and regulatory risk.
A fintech secure development lifecycle should include:
Secure coding standards
Code review
Static and dynamic application security testing
Dependency scanning
Penetration testing
API security review
Secrets management
Development and production environment separation
Change management
Patch management
Secure deployment pipelines
Logging and monitoring
Vulnerability disclosure procedures
API security is especially important for open banking, BaaS, payment gateways, digital wallets, and crypto exchanges. APIs may connect banks, payment institutions, merchants, customers, vendors, and regulators. A vulnerable API may allow unauthorized account access, data leakage, transaction manipulation, or denial-of-service attacks.
API contracts should address authentication, encryption, rate limits, audit logs, incident notification, testing, version control, and liability for security failures.
11. Cloud, Outsourcing, and Vendor Cybersecurity
Fintech companies frequently rely on cloud providers, KYC vendors, AML screening tools, fraud detection systems, payment processors, software developers, call centers, blockchain analytics providers, and cybersecurity vendors. Outsourcing can improve efficiency, but it does not remove legal responsibility.
The CBRT Annual Report for 2024 notes that additional payment and electronic money institutions started receiving community cloud services from eligible external service providers, showing the increasing practical relevance of cloud outsourcing in the sector.
Vendor contracts should include:
Security standards
Confidentiality obligations
Data protection clauses
Audit rights
Penetration testing requirements
Incident notification timelines
Subcontracting restrictions
Business continuity obligations
Data backup and recovery
Encryption requirements
Access control rules
Regulatory cooperation
Termination assistance
Data return and deletion
Liability and indemnity
Vendor due diligence should be performed before onboarding. A fintech company should ask whether the vendor has adequate certifications, incident response procedures, security controls, access management, data localization arrangements, and regulatory cooperation capacity.
12. Incident Response and Crisis Management
A fintech company must be prepared to respond quickly to cyber incidents. Incident response should be documented, tested, and understood by legal, compliance, IT, security, operations, customer support, and senior management teams.
An incident response plan should answer:
Who detects and classifies incidents?
Who has authority to shut down or isolate systems?
Who preserves evidence?
Who contacts regulators?
Who communicates with customers?
Who coordinates with banks and vendors?
How are suspicious transactions blocked?
How are compromised accounts frozen?
How are crypto withdrawals suspended?
How are personal data breach notifications handled?
How is business continuity maintained?
How are lessons learned documented?
In fintech, delay can increase loss. If a platform detects account takeover or private key compromise, minutes may matter. Therefore, incident response should include predefined playbooks for payment fraud, data breach, ransomware, API abuse, crypto asset theft, administrator compromise, and vendor outage.
13. Business Continuity and Operational Resilience
Cybersecurity is not only about preventing attacks. It is also about ensuring that services continue or recover quickly when incidents occur. Payment systems, wallets, trading platforms, open banking APIs, and digital banking services must be resilient.
Operational resilience should include:
Business impact analysis
Disaster recovery plans
Redundant systems
Backup infrastructure
Recovery time objectives
Recovery point objectives
Crisis communication plans
Regular failover tests
Incident simulations
Vendor continuity controls
Alternative customer support channels
Manual fallback processes where appropriate
For crypto and payment companies, downtime can create customer panic, market risk, liquidity issues, and reputational harm. A fintech company should not wait for an incident to discover that backups are incomplete or recovery procedures are untested.
14. Cybersecurity and AML/Fraud Monitoring
Cybersecurity and AML compliance increasingly overlap. Cyberattacks may create suspicious transactions, and suspicious transactions may reveal cybercrime. For example, account takeover may be followed by rapid transfers, crypto withdrawals, stablecoin movements, or merchant settlement abuse.
Turkey has increased scrutiny over payment firms and crypto transactions in connection with AML and financial crime concerns. Reuters reported that Turkey has taken steps targeting money laundering through crypto transactions, including controls linked to Travel Rule information and stablecoin transfer limits. Reuters also reported heightened scrutiny of payment companies after Turkey’s FATF grey-list exit.
Fintech companies should integrate fraud monitoring and cybersecurity alerts. For example:
Multiple failed login attempts may trigger AML review.
A new device followed by high-value transfer may trigger step-up authentication.
Rapid crypto withdrawal after password reset may trigger manual review.
Merchant settlement spikes may trigger fraud investigation.
Linked accounts from the same device may trigger mule account detection.
Suspicious IP addresses may trigger access restrictions.
A strong fintech compliance system connects cybersecurity, fraud, AML, customer support, and legal teams.
15. Employee Training and Insider Risk
Employees are part of the cybersecurity framework. Human error, weak passwords, phishing, social engineering, misuse of administrator rights, and unauthorized data access can cause major incidents.
Fintech employee training should cover:
Phishing awareness
Password and authentication rules
Secure handling of customer data
Incident reporting
Use of approved devices and systems
Confidentiality of financial information
Remote work security
Social engineering risks
Clean desk and access control
AML and fraud escalation
Vendor communication rules
Insider risk should also be managed. Employees with access to customer data, wallet systems, transaction approval tools, admin panels, or private key infrastructure should be subject to strict controls, logging, segregation of duties, and periodic review.
16. Legal Liability for Cybersecurity Failures
Cybersecurity failures may create several types of legal liability.
A fintech company may face administrative sanctions from financial regulators if it violates sector-specific cybersecurity rules. It may face KVKK sanctions if it fails to protect personal data or notify a data breach properly. It may face customer claims if unauthorized transactions occur because of inadequate security. It may face contractual liability if it breaches bank, vendor, merchant, or investor agreements. In serious cases, cyber incidents may also lead to criminal complaints or regulatory investigations.
Potential consequences include:
Administrative fines
Regulatory warnings
License suspension or revocation
Restrictions on activities
Data breach investigation
Customer compensation claims
Termination of banking partnerships
Loss of payment network access
Investor due diligence failure
Reputational harm
Management liability
Litigation and arbitration
Criminal investigation exposure
The legal assessment often depends on whether the company implemented reasonable security measures before the incident. A company that can prove risk assessments, policies, audits, penetration tests, staff training, vendor due diligence, and incident response actions will be in a stronger position than a company with no documented security governance.
17. Practical Cybersecurity Compliance Checklist for Fintech Companies in Turkey
A fintech company operating in Turkey should consider the following checklist:
Classify the company’s regulatory status.
Identify whether CBRT, BRSA, CMB, MASAK, KVKK, or Cybersecurity Law obligations apply.
Prepare a cybersecurity risk assessment.
Adopt board-approved information security policies.
Implement role-based access controls.
Use multi-factor authentication for customers and employees.
Secure APIs and mobile applications.
Perform penetration tests and vulnerability assessments.
Establish secure software development processes.
Encrypt sensitive data.
Protect logs against alteration.
Prepare incident response playbooks.
Create a data breach notification procedure.
Prepare business continuity and disaster recovery plans.
Review cloud and outsourcing contracts.
Conduct vendor cybersecurity due diligence.
Train employees regularly.
Integrate cybersecurity alerts with fraud and AML monitoring.
Protect KYC and AML records with strict access controls.
Review crypto custody and private key security where relevant.
Maintain audit trails for financial transactions.
Monitor legal updates under Cybersecurity Law No. 7545 and sector-specific regulations.
This checklist should be adapted to the business model. A payment gateway, electronic money wallet, crypto exchange, digital bank, BaaS interface provider, open banking company, and lending platform will not have identical cybersecurity obligations.
Why Legal Support Is Important
Cybersecurity compliance for fintech companies requires coordination between financial regulation, data protection, technology contracts, AML, consumer law, corporate governance, and dispute resolution. A purely technical cybersecurity audit is not enough. The company must also understand which legal obligations apply, what documentation is required, which regulators may be involved, and how liability should be allocated in contracts.
A fintech lawyer can assist with:
Cybersecurity legal risk assessment
KVKK data security compliance
Data breach response planning
Payment and e-money cybersecurity obligations
Digital banking and BaaS cybersecurity review
Crypto custody and private key legal risk analysis
Vendor and cloud contract drafting
Incident notification procedures
Customer agreement review
Regulatory correspondence
Administrative sanction defense
Cyber incident litigation
Fintech dispute resolution
Legal support is most effective before an incident occurs. Once a cyberattack happens, the company must act quickly and decisions made in the first hours may affect regulatory exposure, customer trust, evidence preservation, and liability.
Conclusion
Cybersecurity obligations for fintech companies in Turkey are becoming more detailed, more enforceable, and more important. The combination of Cybersecurity Law No. 7545, CBRT payment and e-money rules, BRSA banking information systems regulations, CMB crypto asset service provider rules, MASAK financial crime expectations, and KVKK data security obligations creates a comprehensive compliance environment for fintech businesses.
Fintech companies must understand that cybersecurity is not only about preventing hackers from entering a system. It is about protecting customer funds, digital assets, identity data, transaction records, financial infrastructure, business continuity, and regulatory trust.
A strong cybersecurity framework should include governance, risk assessment, secure software development, API security, access controls, customer authentication, encryption, vendor management, incident response, business continuity, audit trails, employee training, and legal documentation.
Turkey’s fintech market offers major opportunities in payments, e-money, digital banking, BaaS, open banking, crypto assets, lending, and embedded finance. However, companies that fail to build cybersecurity into their legal and technical architecture may face regulatory sanctions, customer claims, operational disruption, and loss of market confidence.
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