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Documentation Index

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Overview

The second week of the 90 Days of Cybersecurity challenge focuses on building essential security knowledge aligned with CompTIA Security+ certification (SY0-701). This week builds upon your networking foundation and introduces core cybersecurity concepts, threats, vulnerabilities, and security controls.

Learning Path

1

Day 8: Threats, Attacks & Vulnerabilities

Understand different types of cyber threats, attack vectors, and common vulnerabilities.
2

Day 9: Architecture & Design

Learn about secure network architecture, cloud security, and infrastructure design.
3

Day 10: Implementation

Explore implementing secure systems, protocols, and security controls.
4

Day 11: Operations & Incident Response

Study security operations, monitoring, and incident response procedures.
5

Day 12: Governance, Risk & Compliance

Understand security policies, frameworks, regulations, and risk management.
6

Day 13: Cryptography & PKI

Master encryption, hashing, digital signatures, and public key infrastructure.
7

Day 14: Review & Practice

Consolidate your learning with practice questions and scenario-based exercises.

Course Options

Professor Messer’s Security+ (SY0-701) Course

Strongly Recommended - The most comprehensive and well-structured free resource for Security+ preparation.

Professor Messer's SY0-701 Playlist

Complete Security+ SY0-701 video series covering all exam objectives with clear explanations and real-world examples.
Why Choose This Course:
  • Covers 100% of Security+ SY0-701 exam objectives
  • Clear, concise explanations without fluff
  • Free course notes available
  • Regular updates to match current exam version
  • Trusted by thousands of certification candidates

Study Tips

Practice Questions are Critical: Security+ exams are scenario-based. After watching videos, complete practice questions to test your understanding. Focus on:
  • Understanding WHY an answer is correct, not just memorizing
  • Scenario-based questions that test practical application
  • Performance-based questions (PBQs) simulation
Complete related practice questions and exercises daily. Consider these resources:
  • Professor Messer’s free Security+ practice exams
  • CompTIA CertMaster Practice
  • Jason Dion’s practice tests (paid)
  • Exam Compass free practice questions

Key Topics to Master

By the end of Day 14, you should be comfortable with:

Security Fundamentals

  • CIA Triad: Confidentiality, Integrity, and Availability
  • Attack Types: Phishing, malware, social engineering, DDoS
  • Threat Actors: APTs, insider threats, hacktivists
  • Vulnerability Management: Scanning, assessment, and remediation

Security Controls & Technologies

  • Access Control: Authentication, authorization, and accounting (AAA)
  • Cryptography: Symmetric, asymmetric encryption, and hashing
  • Network Security: Firewalls, IDS/IPS, VPNs, and segmentation
  • Security Tools: SIEM, EDR, vulnerability scanners

Security Operations

  • Incident Response: Detection, analysis, containment, recovery
  • Monitoring & Logging: Security event analysis and correlation
  • Risk Management: Assessment, mitigation, and acceptance
  • Compliance: GDPR, HIPAA, PCI-DSS, and other frameworks

Additional Practice

CompTIA Security+ Certification

Official certification information and exam objectives (SY0-701)

Security+ Exam Objectives

Download the official exam objectives document

Professor Messer Practice Exams

Free practice questions and study resources

Cybrary Security+ Course

Additional free training content and labs

Real-World Application

Security is Not Just Theory: As you learn these concepts, think about how they apply to real-world scenarios. Consider:
  • How would you secure a small business network?
  • What steps would you take during a security incident?
  • How do compliance requirements affect security implementations?

Next Steps

After completing Security+ concepts, you’ll move on to Linux Tutorials (Days 15-28), where you’ll gain hands-on experience with the operating system that powers most security tools and infrastructure.