// HIGH-ASSURANCE TECHNICAL CONTROLS

Information Security & Data Safety Policy

Rigorous technical, cryptographic, and operational safeguards engineered to protect client confidential records, forensic disk images, and strategic workpapers.

ISO/IEC 27001:2022 Aligned • Cryptographic Controls: FIPS 140-3 Compliant
[01] ENDPOINT ARCHITECTURE

1. Clean-Room Workstation & Hardware Hygiene

All advisory analysis, forensic examination, and client deliverable drafting takes place exclusively on hardened, dedicated hardware:

  • Hardware Full-Disk Encryption: AES-256 XTS encryption enforced at hardware level across all endpoints (Apple FileVault / BitLocker TPM 2.0).
  • FIDO2 Hardware Key Authentication: Passwords are fortified with physical FIDO2/WebAuthn hardware security keys (YubiKey) required for all administrative access.
  • Ephemeral Enclaves: Client datasets are segregated in cryptographically isolated enclaves and destroyed upon mandate completion using NIST SP 800-88 sanitization standards.
[02] TRANSPORT SECURITY

2. Transport Cryptography & Communications Channels

Data in transit is protected using modern, defensible cryptographic standards:

Web & API Channels

Enforced TLS 1.3 with Perfect Forward Secrecy (PFS), HSTS with 1-year preload, and strict Content Security Policies (CSP).

Confidential Direct Comms

Priority client briefings supported via Signal Protocol and WhatsApp Business end-to-end encryption protocols.

[03] BREACH NOTIFICATION SLA

3. 72-Hour Breach Notification SLA

In compliance with Article 33 of the UK GDPR and international best practices, in the unlikely event of a verified or suspected security incident involving client confidential information:

Mandatory Notification Window: Mtengwa Strategic Advisory commits to notifying the client's designated CISO, General Counsel, or Board Representative within 72 hours of confirmation, providing technical forensic scoping, impacted records inventory, and immediate mitigation containment.
[04] FORENSICS HYGIENE

4. Digital Forensics & Evidence Chain of Custody

For specialized advisory mandates involving digital investigations and forensic preservation:

  • Hardware Write-Blockers: All raw media acquisition utilizes forensic hardware write-blockers to eliminate write-back risks.
  • Cryptographic Hashing: Dual SHA-256 and SHA-512 verification hashes are computed immediately at acquisition and re-verified at each handoff.
  • Audited Custody Logs: Physical and digital chain-of-custody ledgers document exact timestamps, handler identities, and storage locations.
[+] EXECUTIVE COMMUNICATIONS PROTOCOL

Direct Principal Channels & Retained Advisory Intake

SURREY, UK • SERVING UK & INTERNATIONAL CLIENTS
VIRTUAL SWITCHBOARD 24/7 GREETING
+44 1483 928037

Professional automated executive reception and priority message routing for prospective advisory mandates.

Call Switchboard
MOBILE & WHATSAPP DIRECT DESK
+44 7459 190198

Direct messaging channel for urgent confidential inquiries, board scheduling, and bilateral follow-ups.

Open WhatsApp Desk
Burhani Mtengwa
PRINCIPAL INBOX
DIRECT
principal@mtengwa.co.uk

Direct inbox for Principal Advisor Burhani Mtengwa. For board scoping, strategic reviews, and bilateral NDAs.

Email Principal
CALENDAR BRIEFING DIRECT BOOKING
Executive Calendar

Direct confidential scheduling for board chairs, C-suite executives, and private equity sponsors.

Select Date & Time ↗
WHATSAPP BRIEFING +44 7459 190198