Cyber Security

By kelvin mwelwa Categories: Cyber Security
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About Course

Introduction to Cyber security

In today’s digital age, cyber security is crucial for protecting individuals, organizations, and governments from cyber threats. Cyber security involves practices, technologies, and processes designed to safeguard digital information, networks, and systems from unauthorized access, use, disclosure, disruption, modification, or destruction.

Key Aspects:

1. Confidentiality: Protecting sensitive information from unauthorized access.
2. Integrity: Ensuring data accuracy and preventing unauthorized modifications.
3. Availability: Ensuring systems and data are accessible when needed.

Threats:

1. Malware (viruses, ransomware, trojans)
2. Phishing attacks
3. Denial of Service (DoS) attacks
4. Data breaches
5. Identity theft

Measures:

1. Firewalls
2. Encryption
3. Antivirus software
4. Strong passwords
5. Regular updates and patches
6. Network security
7. Incident response planning

Importance:

1. Protects sensitive information
2. Prevents financial losses
3. Maintains trust and reputation
4. Ensures business continuity

Career Opportunities:

1. Security analyst
2. Penetration tester
3. Incident responder
4. Chief Information Security Officer (CISO)
5. Cyber security consultant

Staying Safe Online:

1. Use strong passwords
2. Keep software up-to-date
3. Be cautious with emails and links
4. Use antivirus software
5. Back up data regularly

Cyber security is an ongoing process, requiring continuous monitoring, evaluation, and improvement to stay ahead of evolving threats.

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What Will You Learn?

  • 1. 🧱 Fundamentals of Cybersecurity
  • 2. 🧠 Network Security
  • 3. 🔐 Cryptography
  • 4. 👨‍💻 Application Security
  • 5. 🧰 Endpoint and Device Security
  • 6. 🧑‍🏫 User and Identity Management
  • 7. 💣 Threat Intel & Incident Response
  • 8. ☁️ Cloud Security
  • 9. ⚖️ Legal, Ethics, Compliance
  • 10. 🤖 Emerging Topics

Course Content

1. 🧱 Fundamentals of Cybersecurity
✅ Step-by-Step:

  • Step-by-Step:
    03:00

2. 🧠 Network Security
✅ Step-by-Step:

3. 🔐 Cryptography
✅ Step-by-Step: 1. Understand Encryption Types o Symmetric (AES-256), Asymmetric (RSA, ECC). o Choose based on performance vs. key distribution needs. 2. Implement PKI o Set up a CA (e.g., Microsoft CA or OpenSSL). o Use certificates for devices, email, and authentication. 3. Hashing & Digital Signatures o Use SHA-256/SHA-3 for integrity. o Use GPG or OpenSSL for signing/verifying files. 4. Manage SSL/TLS Certs o Deploy Let's Encrypt or commercial CAs. o Monitor expiry with Certbot or Nagios.

5. 🧰 Endpoint and Device Security
✅ Step-by-Step: 1. Deploy Antivirus/EDR o Use EDRs like CrowdStrike, SentinelOne. o Monitor anomalies and behavior-based alerts. 2. Patch Management o Use WSUS, SCCM, or ManageEngine. o Automate updates, scan for vulnerabilities (Nessus). 3. Mobile Device Management (MDM) o Use Intune, MobileIron, or Jamf. o Enforce screen locks, encryption, and app restrictions. 4. Implement Zero Trust o Never trust, always verify. o Use micro-segmentation + MFA + device posture checks.

6. 🧑‍🏫 User and Identity Management
✅ Step-by-Step: 1. Enforce 2FA/MFA o Use Authenticator apps, hardware tokens (YubiKey), or biometrics. 2. Authorization Controls o Role-based (RBAC), Attribute-based (ABAC), Least Privilege. 3. Deploy SSO o Implement via SAML or OAuth (e.g., Okta, Azure AD). o Centralize user access logging and provisioning. 4. IAM Systems o Use platforms like ForgeRock, AWS IAM, or Keycloak. o Integrate with HR systems for automated onboarding/offboarding.

7. 💣 Threat Intel & Incident Response
✅ Step-by-Step: 1. Threat Hunting o Use tools like ELK Stack, Velociraptor. o Search for IoCs, TTPs using threat feeds (AlienVault, MISP). 2. Set Up SIEM o Splunk, QRadar, or ELK with Sigma rules. o Ingest logs from endpoints, firewalls, apps. 3. Build IR Plans o Document roles, containment strategies, comms plans. o Run tabletop exercises quarterly. 4. Do Forensics & Malware Analysis o Use Autopsy, Volatility for memory/disk analysis. o Use sandboxes (Cuckoo) to analyze payloads.

8. ☁️ Cloud Security
✅ Step-by-Step: 1. Understand Cloud Models o Know your responsibilities in IaaS, PaaS, SaaS. o Read CSP’s Shared Responsibility Model. 2. Use CASB o Implement Netskope, McAfee MVISION for visibility. o Block risky SaaS usage and shadow IT. 3. Manage Identities & Keys o Use cloud-native IAM (AWS IAM, Azure AD). o Rotate and encrypt keys with KMS (AWS, GCP, Azure). 4. Cloud Auditing o Enable CloudTrail (AWS), StackDriver (GCP). o Use GuardDuty, Security Command Center.

9. ⚖️ Legal, Ethics, Compliance
✅ Step-by-Step: 1. Understand Regulations o Map GDPR, HIPAA, CCPA requirements to your environment. o Use privacy impact assessments (PIA). 2. Ethical Hacking & Pentesting o Get authorized scope. Use tools like Burp, Metasploit. o Report findings clearly, with CVSS scores. 3. Governance Policies o Write clear Acceptable Use, Access Control, and Data Handling policies. o Review annually and educate staff. 4. Audit Readiness o Maintain audit trails, evidence logs. o Use GRC platforms like Archer or LogicGate.

10. 🤖 Emerging Topics
✅ Step-by-Step: 1. AI in Cybersecurity o Use ML for anomaly detection (Darktrace, Vectra). o Automate triage with SOAR platforms (Cortex XSOAR). 2. Zero Trust Architecture o Identity-first, device-aware, context-driven access control. o Use solutions like Zscaler, Google BeyondCorp. 3. Quantum-Resistant Crypto o Track NIST PQC standards (CRYSTALS-Kyber, Dilithium). o Avoid RSA-2048 for long-term storage. 4. Blockchain & IoT Security o Validate smart contracts with tools like MythX. o Secure IoT devices using strong device identity, firmware integrity checks. 5. Sure! Here’s a 10-question multiple choice quiz (with four options each and correct answers indicated), plus 5 true or false questions based on your topics. Let’s keep it concise but still challenging enough to test key concepts across the cybersecurity spectrum.

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