Requirements Gathering for a Payment Processing API
1. Stakeholder Identification
- Product Owner
- Developers (Backend, Frontend)
- QA Team
- Security Team
- External partners (e.g., payment gateways)
2. Business Goals
- Enable secure and fast processing of customer payments.
- Support multiple payment methods (credit cards, PayPal, etc.).
- Ensure compliance with PCI-DSS security standards.
- Provide real-time payment status updates.
3. Functional Requirements
| ID | Requirement Description | Priority | Notes |
|---|---|---|---|
| FR1 | API must allow creating a payment transaction | High | Input: amount, currency, payment method, user ID |
| FR2 | API must support retrieving the status of a transaction | High | Output: pending, completed, failed |
| FR3 | API must support refunding a transaction | Medium | Refund amount can be partial or full |
| FR4 | API must validate payment details before processing | High | Validate card number, expiry, CVV |
| FR5 | API must log all payment attempts for audit purposes | High | Logs must be stored securely |
| FR6 | API should support pagination when listing transactions | Low | Support page size and page number |
4. Non-Functional Requirements
| ID | Requirement Description | Priority | Notes |
|---|---|---|---|
| NFR1 | API must respond within 2 seconds for 95% of requests | High | Performance benchmark |
| NFR2 | API must be available 99.9% of the time | High | High availability required |
| NFR3 | API must use HTTPS for all communications | High | Security requirement |
| NFR4 | API keys must be used for authentication | High | Support OAuth 2.0 |
| NFR5 | API must be scalable to handle 1000 concurrent requests | Medium | Prepare for peak loads |
5. Data Requirements
- Payment transaction data fields: transaction_id, user_id, amount, currency, payment_method, status, timestamp, refund_status.
- Sensitive data (card info) should not be stored directly.
- Logs must include request IP, timestamp, and transaction outcome.
6. Constraints
- Must integrate with external payment gateway X.
- Must comply with PCI-DSS standards.
- Limited development time: 8 weeks.
7. User Stories (Example)
- As a merchant, I want to create a payment transaction so that I can charge a customer.
- As a system admin, I want to view the status of any transaction to monitor processing.
- As a user, I want to refund a payment if necessary.
8. Questions for Stakeholders
- Which payment methods should be prioritized?
- What level of detail is required in error responses?
- Are there any regional compliance rules for payments?
If you’d like, I can help you draft this for your specific API project or break down any part into more detail!
4.1-mini
You said:
example of requirements gathering analysis and validation for information security
ChatGPT said:
Absolutely! Here’s an example illustrating requirements gathering, analysis, and validation specifically for an Information Security project, such as implementing a secure access control system for an enterprise.
Example: Requirements Gathering, Analysis, and Validation for Information Security
1. Requirements Gathering
Stakeholders:
- Chief Information Security Officer (CISO)
- IT Security Team
- Compliance Officer
- System Administrators
- End-users
Business Context:
- The company needs to protect sensitive data and systems from unauthorized access.
- Must comply with GDPR, HIPAA, or other relevant regulations.
- Reduce risk of data breaches and insider threats.
Collected Requirements:
| ID | Requirement Description | Source/Stakeholder |
|---|---|---|
| IS1 | Implement role-based access control (RBAC) to limit user permissions | CISO, IT Security Team |
| IS2 | Enforce multi-factor authentication (MFA) for all remote access | Compliance Officer |
| IS3 | All user access events must be logged and monitored in real-time | IT Security Team |
| IS4 | Passwords must meet complexity and expiration policies | System Admin |
| IS5 | System must encrypt sensitive data at rest and in transit | Compliance Officer |
| IS6 | System must automatically lock user accounts after 5 failed login attempts | IT Security Team |
2. Requirements Analysis
- Categorize requirements: Security controls, compliance, usability, monitoring.
- Identify dependencies:
- MFA depends on existing authentication systems.
- Encryption requires key management infrastructure.
- Assess feasibility:
- Review current systems to see if RBAC can be integrated or requires new platform.
- Determine resources for logging and real-time monitoring tools.
- Prioritize:
- Critical: MFA, encryption, access logs.
- Important: Account lockout, password policies.
- Lower: Usability improvements.
- Conflict resolution:
- Usability vs security: MFA might cause friction, consider adaptive authentication.
- Logging volume vs storage costs: Balance log retention periods.
3. Requirements Validation
- Review sessions with stakeholders to confirm:
- RBAC roles and permissions are well-defined and reflect business needs.
- MFA methods (SMS, app-based tokens) are acceptable and feasible.
- Logging includes all necessary events and meets compliance.
- Encryption standards align with industry best practices (AES-256, TLS 1.2+).
- Prototyping or Proof of Concept (PoC):
- Test MFA implementation on a pilot group.
- Validate logging and alerting with simulated attacks.
- Traceability matrix:
- Map requirements to business goals, compliance requirements, and design specifications.
- Verification criteria:
- Define clear success measures, e.g., MFA enabled for 100% of remote users by launch.
- Automated alerts triggered within 1 minute of suspicious activity.
Summary Table
| Requirement ID | Validated By | Validation Method | Outcome/Status |
|---|---|---|---|
| IS1 | CISO, IT Security Team | Review meeting, documentation | Approved |
| IS2 | Compliance Officer, Users | PoC test, user feedback | Approved with adjustments |
| IS3 | IT Security Team | Log audit, simulated attacks | Approved |
| IS4 | System Admin | Policy review, test password resets | Approved |
| IS5 | Compliance Officer | Security audit, encryption tests | Approved |
| IS6 | IT Security Team | Test account lockout policy | Approved |