Who, exactly, is "am9icytiNjRAc2lmdHNjaWVuY2UuY29t" (listed as a contact on the Jobs page)?
Sift Science does not look like some arrogant company that has cooked up their own broken security system, and that deserves to be poked at this way. It is not a public service to defeat this quiz, a quiz that some people would have been happier solving on their own so as to have a fair shot at apply for the job.