CompTIA Security+ SY0-701: General Security Concepts-Vol 1

Identify preventive control types as guardians that keep bad stuff out of your digital world, using passwords and firewalls to protect valuable data, prevent vulnerabilities, and reduce attack impact.

Explore detective controls such as IDS/IPS, CIM/SIEM, UEBA, EDR, NTA, vulnerability scanners, and threat intelligence, plus audits, incident response, continuous monitoring, and red teaming to detect and respond to threats.

Learn to identify gaps between current security practices and desired posture via gap analysis, using examples like patch management, employee security training, encryption, incident response, and third party vendor management.

Explore zero trust control plane concepts: adaptive identity, threat scope reduction, policy driven access control, policy administration, and policy engine, with club analogies and vendor examples.

Explore physical security by examining bollards, access control vestibules, fencing, video surveillance, guards, access badges, and lighting to create layered protection for buildings.

Identify and engage all stakeholders in cybersecurity change management, including employees, management, customers, vendors, regulators, and the wider community, to inform, consult, and address feedback through two-way dialogue.

Documentation acts as the blueprint for IT operations, covering architecture diagrams, manuals, and policies; keep it version-controlled, updated, and accessible to ensure onboarding, compliance, continuity, and reduced downtime.

Explore why encryption matters and the layers from full disk to file, volume, database, and record encryption, and encryption in transit with https, vpn, and algorithms like rsa and ecc.

Explore key exchange algorithms including diffie-hellman, rsa key exchange, and elliptic curve diffie-hellman, their vulnerabilities and performance, and their role in ssl tls and vpn security, plus quantum key distribution.

Explore how key length, measured in bits, increases encryption complexity and security. Compare RSA, AES, and ECC to understand trade-offs in strength and performance.

Explore the tools of encryption and the PKI, including TPM, HSM, key management systems, and secure enclaves, and learn how they secure and store keys in modern enterprises.

Understand obfuscation as disguising code and data to protect intellectual property. It preserves functionality while hindering reverse engineering, piracy, and unauthorized access.

Hash functions act as a one-way blender that converts data into a fixed-size hash, ensuring data integrity and secure password storage, with fast, deterministic processing and minimized collisions.

Review how weak hashing and lack of salting fueled major breaches, such as LinkedIn 2012 and Yahoo 2013–2014 using md5, and learn to implement salting, sha-256, and ongoing audits.

Define digital signatures as electronic fingerprints authenticating digital documents with public key cryptography and a private key, tracing origins to Diffie-Hellman and RSA, alongside Adobe Sign, DocuSign, and quantum research.

Explore the evolution of key stretching from early password hashing to modern defenses like bcrypt and pbkdf2, increasing computational cost to thwart attackers.

Explore blockchain as a decentralized digital ledger that shares a notebook across many computers, updates with every transaction, and supports digital currency such as Bitcoin, land records, and food traceability.

Adopt blockchain to securely and transparently manage property records, energy trading, academic credentials, and art provenance, reducing fraud and enabling verifiable, tamper-proof transactions across sectors.

Explore SSL vulnerabilities in 3.0, including poodle and beast, and how TLS replaces them with stronger encryption, better cipher handling, and certificate validation.

Explore how a certificate signing request enables a certificate authority to issue an ssl certificate, containing the public key, domain name details, and the private key security.

Build a Linux Ubuntu 20.04 virtual machine in Azure, connect via Putty using its public IP, and configure an A record to point the domain to the server.

Map the root domain to the server's public IP with an A record at the registrar, then configure the web server and obtain certificates, plus public and private key labs.

Log into an ubuntu server, install Certbot and the Apache plugin, obtain a Let's Encrypt certificate for cyberdefense learning.com, configure www and non-www DNS A records, and expect propagation.