How a Single Bit Inside Your Processor Shields Your Operating System's Integrity

ACE your next technical interview! Get 10% off when subscribing to Neetcode Pro: https://neetcode.io/core Join CodeCrafters and learn by creating your own: INTERPRETER, Redis, Git, Http server, Interpreter, Grep... in your favorite programming language: https://app.codecrafters.io/join?via=... Sponsor my work on Github: https://github.com/jdvillal In this video we learn about CPU kernel/user operational modes and how the hardware helps software (the operating system) to maintain complete control of the computer. Content: 00:00 Intro 00:57 CPU operational modes. 02:28 Interrupts 04:02 Op. Mode switching mechanism 04:53 Kernel-mode && User-mode 07:51 Sponsor message 08:34 System calls 13:31 Op. Mode switching mechanism (Summary) 14:14 Cooperative Operating Systems 14:53 Preemptive Operating Systems 16:34 Operating system abstraction 17:03 Kernel-level Drivers 18:37 Kernel-level Software (Rootkit) 19:49 The CrowdStrike disaster 20:20 Spyware concerns with Vanguard 21:08 Video recommendations (for further information) 21:18 Close Questions and business contact: [email protected] Join our discord server:   / discord   Follow me on twitter: https://twittter.com/coredumpped Twitch:   / coredumpped