Why is missing rate limiting considered a critical flaw?

All answers to this question.

Missing rate limiting opens your infrastructure to unrestricted resource consumption and brute force automation. Without throttling, an attacker can launch scripts that send millions of requests per second to resource heavy endpoints, such as search functions or pdf generation tools. This can completely overwhelm your application servers, causing database lockups and full system outages. Additionally, it allows malicious actors to automate high velocity scraping of user records or execute credential stuffing attacks without triggering any operational friction.

   Answered 2025-09-15 by Grace Kelly

Should rate limits be applied globally across the entire infrastructure stack, or should developers customize limits based on specific user roles and individual endpoint costs?

   Answered 2025-10-03 by Alan Alda

• Alan, customized tiering is definitely the industry best practice. Public unauthenticated routes like login or password reset should have incredibly strict, low thresholds, while authenticated premium tier enterprise APIs should be granted much higher concurrent limits managed via your gateway policies.

     Commented 2025-10-10 by Kenneth Cole

Lack of throttling can also destroy a company financially if your endpoints trigger third party paid APIs behind the scenes, like sending an SMS message or a paid location look up.

   Answered 2025-10-24 by Audrey Hepburn

• That is a terrifyingly accurate point, Audrey. An attacker can exploit an unthrottled SMS registration endpoint to run up thousands of dollars in cellular gateway fees in a single night.

     Commented 2025-11-01 by Ronald Wagner