“When the phone number is registered, it returns 200 OK, but when the number is not registered, it returns 418 I'm a teapot.“ Good reminder that fun little Eas

“When the phone number is registered, it returns 200 OK, but when the number is not registered, it returns 418 I'm a teapot.“ Good reminder that fun little Easter eggs like using the bizarre 418 return code can bite you. I’d hate to be the engineer defending that decision after this vulnerability was discovered.