Security+ Certification/Objectives/General Security Concepts

1.1 Compare and contrast various types of security controls

• Security control
• Control categories
  • Technical
  • Managerial
  • Operational
  • Physical

• Control types
  • Preventive
  • Deterrent
  • Detective
  • Corrective
  • Compensating
  • Directive

1.2 Summarize fundamental security concepts

• Confidentiality, Integrity, and Availability (CIA)
• Non-repudiation
• Authentication, Authorization, and Accounting (AAA)
  • Authenticating people
  • Authenticating systems
  • Authorization models
• Gap analysis
• Zero Trust
  • Control Plane
    • Adaptive identity
    • Threat scope reduction
    • Policy-driven access control
    • Policy Administrator
    • Policy Engine
  • Data Plane
    • Implicit trust zones
    • Subject/System
    • Policy Enforcement Point

• Physical security
  • Bollards
  • Access control vestibule
  • Fencing
  • Video surveillance
  • Security guard
  • Access badge
  • Lighting
  • Sensors
    • List of sensors
    • Infrared
    • Pressure
    • Microwave
    • Ultrasonic
• Deception and disruption technology
  • Honeypot
  • Honeynet
  • Honeyfile
  • Honeytoken

1.3 Explain the importance of change management processes and the impact to security.

• Business processes impacting security operation
  • Approval process
  • Ownership
  • Stakeholders
  • Impact analysis
  • Test results
  • Backout plan
  • Maintenance window
  • Standard operating procedure

• Technical implications
  • Allow lists/deny lists
  • Restricted activities
  • Downtime
  • Service restart
  • Application restart
  • Legacy applications
  • Dependencies
• Documentation
  • Updating diagrams
  • Updating policies/procedures
• Version control

1.4 Explain the importance of using appropriate cryptographic solutions.

• Public key infrastructure (PKI)
  • Public key
  • Private key
  • Key escrow
• Encryption
  • Level
    • Full-disk
    • Partition
    • File
    • Volume
    • Database
    • Record
  • Transport/communication
  • Asymmetric
  • Symmetric
  • Key exchange
  • Algorithms
  • Key length

• Tools
  • Trusted Platform Module (TPM)
  • Hardware security module (HSM)
  • Key management system
  • Secure enclave
• Obfuscation
  • Steganography
  • Tokenization
  • Data masking
• Hashing
• Salting
• Digital signatures
• Key stretching
• Blockchain
• Open public ledger
• Certificates
  • Certificate authorities
  • Certificate revocation lists (CRLs)
  • Online Certificate Status Protocol (OCSP)
  • Self-signed
  • Third-party
  • Root of trust
  • Certificate signing request (CSR) generation
  • Wildcard