Security+ SY0-701 Study Notes
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DATE 09/11/26
DOMAIN
EXAM OBJECTIVE / SUB-OBJECTIVE
TOPIC
SOURCE / LESSON
CIA Security Triad
KEY CONCEPTS - short bullets, not sentences
MUST MEMORIZE
C: Keep it secret
I: Keep it correct
A: Keep it accessible
Confidentiality
• Only authorized users can access/view data
• Prevents unauthorized disclosure
• Failure of confidentiality > data breach/exposed info
• Think: "Who is allowed to see it?"
Integrity
• Data stays accurate, unchanged, and trustworthy
• Prevents unauthorized modifications
• If integrity is lost > you can't trust the data
• Think: "Has the data been altered?"
COMPTIA TRAPS
Availability
• Systems, apps, and data are accessible when needed
• Focuses on uptime and reliable access
• Threats include outages, hardware failure, and DoS/
DDoS
• Think: "Can I access it when I need it?"
PROTOCOLS / PORTS / ACRONYMS
TERM
PORT
QUESTIONS FOR CHATGPT
WHAT IT DOES / WHY IT MATTERS
REAL-WORLD EXAMPLE - connect the concept to IT / SOC work
C: HR records should only be accessible to HR and authorized management
I: A file hash changes after someone modifies the file
A: Keep it accessible
60-SECOND RECALL - close your notes and explain the topic in your own words
CIA triad is a very important concept as this relates to trust, permissions. and
unchanged data.
CONFIDENCE: 1 2 3 4 5
Rule: if you cannot explain it simply, add it to Weak Areas.