Use of RESTful APIs

How useful would it be to understand RESTful APIs for bug bounties? I’ve been reading up on these and it would seems like they are quite prevalent. Looks like a possible avenue of attack.

It would be very useful.

oh totally worth it if your area is going to be around mobile or web applications as for modern web-sites, web-apps and mobile-apps a LOT of what goes on is via requests to REST based services. Also dig into GraphQL (it’s a bit like if a REST service and SQL had a baby)

Rest services represent a large attack surface, and a critical part of most modern applications. If you watch the network traffic you will normally see a lot of requests being made to services.