Hardware security modules are specialized security devices for storing sensitive cryptographic material like encryption keys. By storing keys on a fortified hardware device, stealing the key becomes much more difficult. The alternative is to store keys on a normal server or computer, which can be significantly riskier. Feel free to ask questions below. 00:00 Intro 00:41 When Encrypting, Storing Keys On The Server Is Risky 02:02 Enter The Hardware Security Module 02:32 Why Are HSMs Better? 03:35 Sequence Diagram Using A HSM 03:57 Before HSM And After HSM