University-level books on networking, cyber security and digital forensics by Dr. Tahseen Al Doori. Read them free online, follow the free video course, then pass the final quiz to earn a certificate.
Open any book in your browser — no sign-up needed.
Follow the free video course on Turning Point.
Take the 20-question final quiz. Pass with 70%.
Download a certificate with a unique ID anyone can verify.
A University Course in Digital Defense
No computer is truly secure — but every weakness you close makes you a less attractive target. This book teaches you to think the way attackers do, from phishing and passwords to malware, Wi-Fi threats and digital forensics. No technical background needed.
University Course Edition
How computer networks really work — from the OSI model, cabling and switches to TCP/IP addressing, Ethernet, wireless, WANs, command-line tools, troubleshooting and network security. One chapter per week across a 15-week university semester.
Concepts, Tools, and the Practice of Digital Investigation
How digital investigators collect, preserve and present evidence — methodology, DFIR, write-blockers, forensic tools, ethics, court reporting and real-life cases.
Enter the certificate ID printed on the certificate, for example CD-CSE-7KQ2MX.
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