APIs facilitate data exchange between applications but also introduce security risks. What are the most common threats? What should we pay attention to for security?
What makes APIs secure and what threats do they pose?
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I completely agree when it comes to API security. Based on my experience, the most common threats I encounter include **injection attacks** (SQL, NoSQL, Command Injection) and **authentication vulnerabilities**. I’ve seen security flaws in Arduino projects with students stem from simple oversights—like leaving an API key hardcoded in the source code.
A few key measures are essential: **enforcing HTTPS**, **strong authentication** (OAuth2, JWT), **input validation**, and **avoiding excessive permissions**. In my own projects, I follow the **API Security by Design** principle—meaning security has to be a priority from the very start. Let’s not forget: APIs just transmit data; **we’re the ones responsible for securing it!**