This book helps candidates prepare for the LPIC3 303-300 security exam by covering all test objectives.
In the future edition, the book will be updated. Anybody is welcome to contribute to the book:
The following link is provided for comments; for permission to edit the content, please contact me (o.zeynalpour@gmail.com).
https://docs.google.com/document/d/1xa_ckl9OyPOMvDGUh3lGZX1IpUVZXVtYjW2_jaTI3ik/edit?usp=sharing