Initial commit - 611 cybersecurity skills across all subdomains

skills/implementing-disk-encryption-with-bitlocker/references/standards.md

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+# Standards & References - Implementing Disk Encryption with BitLocker
+
+## Primary Standards
+
+### NIST SP 800-111 - Guide to Storage Encryption Technologies
+- **Publisher**: NIST
+- **URL**: https://csrc.nist.gov/publications/detail/sp/800-111/final
+- **Scope**: Guidance on planning, implementing, and maintaining storage encryption solutions
+
+### FIPS 140-2/3 - Security Requirements for Cryptographic Modules
+- **Publisher**: NIST
+- **Relevance**: BitLocker uses FIPS 140-2 validated cryptographic modules when configured in FIPS-compliant mode
+
+## Compliance Mappings
+
+| Framework | Requirement | BitLocker Coverage |
+|-----------|------------|-------------------|
+| PCI DSS 4.0 | 3.5.1 - Render PAN unreadable in storage | BitLocker full disk encryption |
+| HIPAA | 164.312(a)(2)(iv) - Encryption/decryption | BitLocker protects ePHI at rest |
+| GDPR | Article 32(1)(a) - Encryption of personal data | BitLocker for data-at-rest protection |
+| NIST 800-53 | SC-28 Protection of Information at Rest | BitLocker encryption |
+| NIST 800-171 | 3.13.16 - Confidentiality of CUI at rest | BitLocker on CUI systems |
+| ISO 27001 | A.10.1.1 - Cryptographic controls policy | BitLocker implementation |
+
+## Microsoft References
+
+- **BitLocker Overview**: https://learn.microsoft.com/en-us/windows/security/operating-system-security/data-protection/bitlocker/
+- **BitLocker Group Policy Reference**: https://learn.microsoft.com/en-us/windows/security/operating-system-security/data-protection/bitlocker/bitlocker-group-policy-settings
+- **BitLocker Recovery Guide**: https://learn.microsoft.com/en-us/windows/security/operating-system-security/data-protection/bitlocker/bitlocker-recovery-guide-plan
+- **TPM Recommendations**: https://learn.microsoft.com/en-us/windows/security/hardware-security/tpm/tpm-recommendations

skills/implementing-disk-encryption-with-bitlocker/references/workflows.md

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+# Workflows - Implementing Disk Encryption with BitLocker
+
+## Workflow 1: Enterprise BitLocker Deployment
+
+```
+[Pre-deployment assessment]
+    │
+    ├── Verify TPM 2.0 across fleet
+    ├── Confirm UEFI/Secure Boot
+    ├── Plan recovery key escrow (AD DS or Azure AD)
+    │
+    ▼
+[Configure GPO/Intune policy]
+    │
+    ├── Set encryption method (XTS-AES 256)
+    ├── Configure key protectors (TPM + PIN for laptops, TPM for desktops)
+    ├── Enable recovery key escrow
+    │
+    ▼
+[Pilot deployment (test group)]
+    │
+    ├── Verify encryption completes without errors
+    ├── Test recovery key retrieval
+    ├── Verify no boot issues
+    │
+    ▼
+[Production rollout (phased)]
+    │
+    ▼
+[Monitor encryption status via Intune/SCCM reports]
+    │
+    ▼
+[Verify 100% coverage, address failures]
+```
+
+## Workflow 2: BitLocker Recovery Process
+
+```
+[User locked out (BitLocker recovery screen)]
+    │
+    ▼
+[User provides Recovery Key ID to helpdesk]
+    │
+    ▼
+[Helpdesk retrieves recovery key]
+    │
+    ├── AD DS: RSAT BitLocker Recovery Password Viewer
+    ├── Azure AD: Azure Portal → Devices → BitLocker keys
+    ├── Intune: Intune Portal → Devices → Recovery keys
+    │
+    ▼
+[User enters 48-digit recovery key]
+    │
+    ▼
+[Investigate why recovery was triggered]
+    │
+    ├── BIOS/firmware update ──► [Expected, no action]
+    ├── TPM failure ──► [Replace TPM or re-encrypt]
+    ├── Boot configuration change ──► [Review change, re-seal TPM]
+    └── Potential tampering ──► [Security investigation]
+```
+
+## Workflow 3: Key Rotation
+
+```
+[Quarterly key rotation policy]
+    │
+    ▼
+[Generate new recovery password]
+    │
+    ▼
+[Backup new key to AD/Azure AD]
+    │
+    ▼
+[Remove old recovery password protector]
+    │
+    ▼
+[Verify new key works in test recovery]
+```