[Free] Security Fundamentals In Ai Era
Real breaches, ordinary fixes: MFA, patching, segmentation, logging, backups and the commands that apply them
What you’ll learn
- Explain any security incident in terms of confidentiality, integrity and availability, and find which property broke
- Find every account without MFA and close the gap, including the help-desk reset paths attackers abuse
- Prioritise patches by known exploitation and internet exposure, then confirm they were actually applied
- Apply default-deny host firewall rules and harden SSH and RDP without locking yourself out
- Spot and fix common cloud misconfigurations: over-privileged roles, public storage, leaked keys and unrotated secrets
- Inventory and audit software dependencies with an SBOM, npm audit and pip-audit, and scan code for leaked secrets
- Turn on logging that someone actually reads, and design offline, tested backups that survive ransomware
- Run a practical hardening checklist that maps each command to the real breach it would have stopped
Requirements
- No prior security experience needed
- Basic comfort with a command line (Linux terminal or Windows PowerShell)
- Optional: a Linux or Windows machine you own, plus a free-tier AWS account, to try the commands
Description
Disclaimer: This course contains the use of artificial intelligence
Most breaches don’t start with a genius hacker. They start with something ordinary: a missed patch, a password without a second factor, a storage bucket left public, a backup nobody ever tested.
This course takes real incidents, including Colonial Pipeline, Equifax, Capital One, SolarWinds, Log4j, Change Healthcare, Storm-0558 and CrowdStrike, and asks one question of each: which boring control would have stopped it?
You’ll learn to think like a defender, then work through identity and MFA, patching and exposure, network segmentation, cloud misconfiguration, the software supply chain, and detection, response and recovery. Every lesson ends with something concrete: a command to run, a report to check, a decision to make.
What makes this course different
Every lesson is traced to named primary sources, not opinion
Real command-line demos on Windows and Linux, run read-only and safely
In-video decision points where you commit to a choice before you hear the answer
Four branching scenarios set at a fictional company, Kestrel, where your choices in week one decide what you can recover later
A final hardening checklist: ten commands, each mapped to the breach it would have shortened
By the end, you won’t just know the fixes. You’ll know how to check whether they’re in place, and where to start this week.
Author(s): Skillmint .
