Book Image

CompTIA Security+ Certification Guide

By : Ian Neil
Book Image

CompTIA Security+ Certification Guide

By: Ian Neil

Overview of this book

CompTIA Security+ is a worldwide certification that establishes the fundamental knowledge required to perform core security functions and pursue an IT security career. CompTIA Security+ Certification Guide is a best-in-class exam study guide that covers all of CompTIA Security+ 501 exam objectives. It is authored by Ian Neil, who is a world-class trainer of CompTIA Security+ 501. Packed with self-assessment scenarios and realistic exam questions, this guide will help you master the core concepts to succeed in the exam the first time you take it. Using relevant examples, you will learn all the important security fundamentals from Certificates and Encryption to Identity and Access Management concepts. You will then dive into the important domains of the exam; namely, threats, attacks and vulnerabilities, technologies and tools, architecture and design, risk management, and cryptography and Public Key Infrastructure (PKI). This book comes with over 600 practice questions with detailed explanation that is at the exam level and also includes two mock exams to help you with your study plan. This guide will ensure that encryption and certificates are made easy for you.
Table of Contents (18 chapters)
12
Mock Exam 1
13
Mock Exam 2
15
Acronyms

Vulnerability Scanning Concepts

A vulnerability scanner is a passive scanner that identifies vulnerabilities or weaknesses in a system. For example, there could be missing updates for the operating system, anti-virus solutions, or there could be only one administrator account on the system. Microsoft has a vulnerability scanning tool called Microsoft Baseline Security Analyzer (MBSA). A Zero-Day exploit cannot be traced by a vulnerability scanner; it has not yet been identified and has no updates or patches available.

Let's look at the type of output a vulnerability scanner could produce:

  • False Positive: A False Positive is where the scan believes that there is a vulnerability but when you physically check it is not there.
  • False Negative: A False Negative on the other hand is more dangerous, there is a vulnerability but the scanner does not detect it. An example of a False...