Securing Elixir Database Queries Against SQL Injection

Building database-driven applications in Elixir requires a strong foundation in security to protect sensitive user data. Writing insecure queries can expose your database to SQL injection attacks, one of the most common and devastating web vulnerabilities. In this text-based course, you will learn how to write secure database interactions using Ecto, Elixir's powerful database wrapper. You will transition from writing vulnerable raw queries to implementing robust, parameterized queries that keep your database safe. What you'll learn: Understand the mechanics of SQL injection attacks and how they target database queries; Master the Ecto pin operator to safely bind dynamic values in queries; Write secure parameterized queries using Ecto's query DSL and raw SQL fragments; Implement secure dynamic query building for complex search and filter features; Apply basic security auditing concepts to identify potential vulnerabilities in Elixir code. You will begin by exploring the foundational concepts of database security and how SQL injection occurs. Then, you will progress through practical, text-based explanations and code snippets demonstrating safe query design, standard Ecto patterns, and security best practices. This course is designed for beginner Elixir developers who want to write secure database code. No prior security experience is required, though a basic familiarity with Elixir syntax and databases is helpful. Start reading today to build secure, injection-resistant Elixir applications.