Practical Lessons in API Security
In this whitepaper, you’ll learn:
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- How broken authorization lets attackers access other users’ data
- Why mass assignment can turn a simple API field into an admin takeover
- How weak password-reset flows become security vulnerabilities
- Practical ways to secure APIs with DTOs, validation, gateway policies, and OpenAPI checks
- How developers, architects, and security teams can prevent API abuse before it becomes a breach
Table of Contents
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Introduction — Why modern APIs need security beyond basic authentication
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API Security: No Snooping in Other People’s Shopping Carts — How Broken Object Level Authorization lets attackers manipulate object IDs and access other users’ resources
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Sign up for your admin account — How mass assignment and uncontrolled input fields can create serious privilege-escalation risks
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Forgot your password? — Why weak security questions and recovery flows can expose user accounts
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Defense Strategies for Modern APIs — Using authorization checks, DTOs, schema validation, OpenAPI governance, API gateways, logging, and testing to reduce risk
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Conclusion — Building APIs that verify access, control input, and resist misuse
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