I am looking into API gateway configurations. How do hackers exploit APIs when there is a complete lack of rate limiting on sensitive endpoints? What specific techniques do they use to overwhelm authentication or data retrieval paths without getting blocked?
3 answers
A lack of rate limiting allows hackers to launch high-velocity automated attacks against API endpoints without facing any restrictions. Attackers exploit this by sending thousands of requests per minute to authentication endpoints to perform credential stuffing or brute-force user passwords. They also target data-heavy endpoints to systematically scrape proprietary information or user directories. Because there are no throttles based on IP addresses, API keys, or user accounts, the backend database becomes overwhelmed, leading to denial of service or massive data theft.
Does implementing a basic rate limit on the web application firewall stop these hackers, or can they easily bypass simple IP-based throttling rules?
Without rate limits, hackers can run automated scripts that query your API indefinitely, pulling down whole databases piece by piece without detection.
Exactly, Theresa. It turns an otherwise secure data endpoint into an open pipeline for data exfiltration if the request volume isn't capped.
Simple IP-based limits are easily bypassed. Hackers utilize distributed proxy networks and botnets to rotate their IP addresses across thousands of distinct locations, making the attack traffic appear completely organic to basic firewalls.