This question is a regular feature in backend developer interview questions for experienced, be ready to tackle it. There are several mitigation strategies that developers use in order to respond to API attacks. Some of the important strategies are:  Distributed Denial-of-Services (DDoS) – To respond to this attack, the developers can limit the payload size and the number of requests.  Injection – To respond to this attack, it is possible to sanitize and validate all data present in the API requests and limit data response to prevent unintentional leakage of sensitive information. Cross-Site Scripting (XSS) – To respond to this attack, the input is validated, and character filtering is used.  Man-in-the-Middle – To respond to this attack, you can encrypt traffic in transit.