I once studied for about 48 hours (off and on) for interview at a security-related startup. After 5 rounds of interviews, not a single person asked me a single

I once studied for about 48 hours (off and on) for interview at a security-related startup. After 5 rounds of interviews, not a single person asked me a single technical question. Needless to say I got caught up in the modern "study for the interview" hype - a trick I hope to not fall for again.