Very long time ago someone abused a referral program of a taxi service by registering multiple accounts just by random-guessing the code. They had badly written rate limiters so a list of 10k proxies, good broadband and a java threadpool were enough to get thousands of free rides in a couple of days.
Very long time ago someone abused a referral program of a taxi service by registering multiple accounts just by random-guessing the code. They had badly written rate limiters so a list of 10k proxies, good broadband and a java threadpool were enough to get thousands of free rides in a couple of days.