September 2026
Intermediate
696 pages
17h 43m
English
Content preview from CompTIA® Security+® SY0-801 Certification Guide - Fourth EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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4
Explain Characteristics of Threats and Vulnerabilities
Understanding how threats operate and how vulnerabilities are exploited is essential for protecting systems, networks, and sensitive information from cyberattacks.
The chapter begins by examining threats, including threat feeds, likelihood, impact, intelligence sources, and the threat life cycle. These concepts help organizations understand how cyber threats emerge, spread, and affect systems.
It will then focus on vulnerabilities, including common vulnerability types such as software flaws, missing patches, weak authentication, misconfigurations, outdated software, and human error. It also explores how vulnerabilities are identified, prioritized, and measured using industry-standard
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.