Michael Gregg Books

Security Administrator Street Smarts

By David Miller Undifferentiated, Michael Gregg

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Build Your Own Security Lab

By Michael Gregg

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CompTIA Security Certification Kit

By Quentin Docter, Toby Skandier, James Pyles, Emmett Dulaney

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Inside Network Security Assessment

By Michael Gregg, David Kim

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CompTIA Security rapid review (exam SY0-301)

By Michael Gregg

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Assess your readiness for CompTIA Security+ Exam SY0-301 - and quickly identify where you need to focus and practice. This practical, streamlined guide walks you through each exam objective, provid...

CompTIA Security rapid review (exam SY0-301)

By Michael Gregg

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CompTIA Security rapid review exam SY0 301

By Michael Gregg

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Certified Ethical Hacker Exam Prep

By Michael Gregg

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CISSP practice questions

By Michael Gregg

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Certified Ethical Hacker Exam Prep

By Michael Gregg

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.