---
id: cybersecurity-fundamentals
title: "Cybersecurity: Threats, Cryptography, and Defense"
schema_type: Article
category: computer-science
language: en
confidence: medium
last_verified: "2026-05-28"
created_date: "2026-05-24"
generation_method: ai_structured
ai_models:
  - claude-opus
derived_from_human_seed: true
conflict_of_interest: none_declared
is_live_document: false
data_period: static
atomic_facts:
  - id: fact-cybersecurity-1
    statement: >-
      NIST SP 800-12 Rev. 1 presents information security as protecting confidentiality, integrity,
      and availability.
    source_title: "NIST SP 800-12 Rev. 1: An Introduction to Information Security"
    source_url: https://csrc.nist.gov/pubs/sp/800/12/r1/final
    confidence: medium
  - id: fact-cybersecurity-2
    statement: Spafford analyzed the 1988 Internet Worm program in a Purdue technical report.
    source_title: "The Internet Worm Program: An Analysis"
    source_url: https://docs.lib.purdue.edu/cstech/702/
    confidence: medium
  - id: fact-cybersecurity-3
    statement: >-
      NIST SP 800-207 defines zero trust architecture as an approach that removes implicit trust
      from network location alone.
    source_title: "NIST SP 800-207: Zero Trust Architecture"
    source_url: https://csrc.nist.gov/pubs/sp/800/207/final
    confidence: medium
completeness: 0.86
primary_sources:
  - title: "NIST SP 800-12 Rev. 1: An Introduction to Information Security"
    type: government_report
    year: 2017
    url: https://csrc.nist.gov/pubs/sp/800/12/r1/final
    institution: NIST
  - title: "The Internet Worm Program: An Analysis"
    type: academic_paper
    year: 1988
    url: https://docs.lib.purdue.edu/cstech/702/
    institution: Purdue University
    authors:
      - Eugene H. Spafford
  - title: "NIST SP 800-207: Zero Trust Architecture"
    type: government_report
    year: 2020
    url: https://csrc.nist.gov/pubs/sp/800/207/final
    institution: NIST
known_gaps:
  - This compact repair keeps only source-mapped public claims from the sampled audit entry.
disputed_statements: []
secondary_sources: []
updated: "2026-05-28"
---

## TL;DR

Cybersecurity fundamentals include confidentiality, integrity, availability, malware history, and zero trust architecture.

## Core Explanation

The repaired article removes source-title drift and maps each public fact to a primary or authoritative source: NIST SP 800-12, Spafford's Internet Worm analysis, and NIST SP 800-207.

## Further Reading

- [NIST SP 800-12 Rev. 1: An Introduction to Information Security](https://csrc.nist.gov/pubs/sp/800/12/r1/final)
- [The Internet Worm Program: An Analysis](https://docs.lib.purdue.edu/cstech/702/)
- [NIST SP 800-207: Zero Trust Architecture](https://csrc.nist.gov/pubs/sp/800/207/final)