Practise explaining cybersecurity out loud

cardosec is a speaking-practice app for cybersecurity. It draws a card (one of 220 security topics), gives you a timer, and you explain the topic out loud with no notes. Then you see which key points you covered and which you missed.

Anyone who has to explain security out loud: people preparing for security interviews (SOC analyst, pentester, AppSec, cloud security, GRC), students and career switchers, and working professionals who brief teams, executives or customers.

Pick Interview mode and your domains. Each card is a real interview question. Answer it out loud against the clock, giving an example and the trade-offs, then compare your answer with the key points and the likely follow-up questions.

220 cards across 10 domains: Web AppSec, Network, Identity & AD, Cloud, Cryptography, Blue team / DFIR, Malware & intel, Famous breaches, GRC, AI security. Cards range from L1 Foundations to L5 Expert, and come in four modes: Explain it, Incident drill, Deep dive and Interview.

Yes. cardosec is free during early access, with no card details needed. You can try it as a guest or sign in with Google to keep your progress across devices.

Yes, optionally. Connect your own Anthropic or OpenAI API key and cardosec grades your transcript against the card: what you covered, what you missed and how to say it better. The key is encrypted, and requests run on your own provider account.

No. Your answer is transcribed so you can review it, and the audio is discarded straight away. cardosec never stores recordings.

Knowing a topic and explaining it clearly under pressure are different skills. Saying an answer out loud, then checking it against key points, is a form of active recall: it shows the gaps that re-reading notes hides, and builds the fluency interviews and incident calls need.