Red Castle Limited - TSCM Practice
Your Boardroom Is Your Most Vulnerable Asset
Nigeria’s professionally trained Technical Surveillance Countermeasures practice. We detect, neutralise, and prevent physical and technological surveillance threats your cybersecurity team cannot see.
“Where your firewall ends, our sweep begins.”
“Where your firewall ends, our sweep begins.”
0
%
of corporate espionage has a physical surveillance component
0
%
of Nigerian boardrooms have never been professionally swept
USD 500B+
estimated global annual loss to corporate intelligence theft
What We Do
Three Capabilities. One Practice.
Red Castle’s TSCM practice, in addition to end-to-end cybersecurity posture and hygiene assessment, combines physical sweep expertise, digital signals intelligence, and secure room engineering – the firm in Nigeria offering all three in a single engagement.
Tier 1 · Tier 2 · Tier 3
Professional TSCM Sweeps
Systematic, evidence-grade detection of all known surveillance threats using calibrated professional instruments operated by trained practitioners.
- RF spectrum surveillance detection (100 kHz–6 GHz)
- Non-linear junction detection - finds powered and unpowered devices
- Thermal imaging - identifies heat from hidden electronics
- Optical camera detection - reveals hidden cameras
- Telephone line analysis - detects PABX and copper taps
- Clearance Certificate + formal Sweep Report
Cyber TSCM
Digital Signals Intelligence
Physical sweeps integrated with digital analysis – rogue wireless devices, network anomalies, and IoT-based surveillance threats detected and documented together.
- Software-defined radio signal analysis
- Rogue WiFi and Bluetooth device discovery
- VoIP and network forensic traffic analysis
- IMSI catcher (fake cellular tower) detection
- AI-assisted signal anomaly classification
- OT/ICS control room integration available
Retainer
Ongoing SCR Protection
A monthly retainer that keeps your executive environment permanently protected – with scheduled sweeps, whitelist management, and priority emergency response.
- Monthly scheduled sweep + Clearance Certificate
- Whitelist pre-population before every meeting
- Priority 24-hour emergency call-out SLA (Lagos)
- Quarterly deep sweep + full systems recertification
- Monthly TSCM Status Report to CISO/CSO
- Annual TSCM awareness session for staff
Secure Conference Room
A Room That Cannot Be Bugged, Recorded, or Leaked.
A Red Castle Secure Conference Room (SCR) is a purpose-hardened meeting space built on
six defence layers. Communications cannot leave. Recordings cannot survive. Your approved team operates normally.
six defence layers. Communications cannot leave. Recordings cannot survive. Your approved team operates normally.
01
Physical Acoustic Isolation
Purpose-built construction to international acoustic standards. Raised-voice discussion in the SCR is unintelligible from any adjacent space – regardless of directional microphones, contact sensors, or laser microphones positioned externally.
02
Passive RF Shielding
A continuous conductive enclosure blocks all electromagnetic transmission – inbound and outbound. No wireless device inside the room can transmit. No external signal can penetrate. No surveillance device can phone home.
03
Active RF Control & Whitelist
A licensed system manages cellular access: your approved phone numbers work normally. All others receive “No Service.” Enterprise WiFi authentication blocks non-enrolled devices. Approved executives remain fully connected.
04
Ultrasonic Anti-Recording
Ultrasonic emitters mounted in the ceiling saturate the microphones of smartphones, laptops, and wearables. Any recording made inside the SCR is incoherent – even if the device appears to be functioning normally.
05
White Noise Masking
Broadband acoustic noise is injected into every structural surface of the room. Contact microphones on walls, pipes, and windows detect only noise. Laser microphones aimed at the glass receive only noise. STI target: <0.25.
06
Entry Protocol & Device Management
Every device entering the SCR is logged and physically isolated. Approved attendees register devices in advance. The Security Host manages the door. No unregistered device enters. No unregistered device records.
SCR Classification: Level 1 – RESTRICTED: Sweep + device protocol (existing space) | Level 2 – CONFIDENTIAL: Anti-recording + WiFi whitelist + acoustic treatment | Level 3 – SECRET: All layers – Faraday shielding + licensed cellular management + full construction
The Whitelist Solution
Approved Phones Work. Everything Else Goes Dark.
Our whitelist architecture is the answer to the question every executive asks: “But what
about my phone?” Your approved devices are registered in advance. They maintain full connectivity. Unauthorised devices are blocked without any disruption to your business.
about my phone?” Your approved devices are registered in advance. They maintain full connectivity. Unauthorised devices are blocked without any disruption to your business.
✅ Approved - Fully Connected
Pre-registered executive phones – calls and data work normally throughout the meeting
Enrolled corporate laptops – connect to approved network with full access
Approved VoIP conferencing lines – inbound and outbound calls permitted to whitelisted numbers
Certified room AV systems – videoconference codec and approved infrastructure operational
❌ Non-Approved - Blocked
Unregistered SIM cards – “No Service” displayed; cannot make or receive calls
Non-enrolled personal laptops and tablets – denied WiFi authentication
Hidden recording devices – RF shielding prevents wireless transmission of recordings
Unknown Bluetooth devices – cannot pair with room infrastructure or relay audio
Use Cases
Who We Protect. What We Prevent.
Red Castle’s TSCM practice serves organisations where a single intelligence leak could cost
a transaction, a competitive position, or human life. Here is a representative sample of what we do.
a transaction, a competitive position, or human life. Here is a representative sample of what we do.
Banking / Capital Markets
Pre-Board Sweep - USD 2B Acquisition Discussion
A Tier-1 bank’s GMD requests a full sweep 24 hours before a board meeting on a pending acquisition. Red Castle sweeps the boardroom, activates all countermeasures, and issues a Clearance Certificate. A rogue device is found and documented. The meeting is rescheduled. The deal closes – securely.
Oil & Gas
Multi-Site PSC Negotiation Protection
An upstream operator suspects their prior negotiation positions were leaked to a counterparty. Red Castle sweeps three venues – Lagos HQ, Port Harcourt office, and the neutral hotel suite – in a 72-hour window. Clearance certificates for all three sites are issued before negotiations resume.
Government / Critical Infrastructure
Ministry Conference Room - SCR Level 2
Cabinet-level sessions on sensitive national policy. The ministry’s conference room is swept, hardened to SCR Level 2 specification, and certified. A monthly Red Castle retainer maintains ongoing protection. Approved ministerial phones remain fully operational throughout every session.
Legal & Professional Services
Privileged Communication Integrity - Law Firm
A major law firm’s privileged litigation strategy appears to have reached opposing counsel. An after-hours sweep discovers a device in the partners’ conference room. A forensic chain-of-custody Compromise Assessment Report is issued for use in legal proceedings.
High-Net-Worth / Personal Security
Residence & Vehicle Fleet Sweep
A principal’s personal security officer identifies a credible surveillance threat. A plainclothes Red Castle team conducts a Tier 3 sweep of two residences and a vehicle fleet – covertly and discreetly. Ongoing retainer activated. No media attention. No disruption to the principal’s schedule.
OT / Critical Infrastructure
Integrated TSCM + OT/ICS - Power Generation
A power generation company suspects SCADA screen content is being observed and recorded in the control room. Red Castle deploys a joint TSCM and OT/ICS team – equipped to address both physical and operational technology surveillance threats in one engagement.
Red Castle serves 20+ documented use case types across Banking, Oil & Gas, Government, Legal, Telecoms, Diplomatic, Hospitality, Healthcare, Media, Defence, and Education sectors.
Why Red Castle
A Category of One in the Nigerian Market
Internationally Trained
International TSCM training, industry affiliations, and a professional certification pathway.
Physical + Cyber + OT
The Nigerian security firm delivering physical sweep, digital signals intelligence, and OT/ICS assessment in a single integrated engagement.
SCR Design & Build
We build rooms that cannot be bugged – Level 1 through Level 3. From a sweep-and-protocol solution to a full Faraday-shielded executive facility.
24-Hour Response
Retainer clients receive a 24-hour emergency call-out SLA in Lagos. A critical meeting cannot wait for surveillance to be cleared.
Board-Grade Evidence
Every engagement produces Clearance Certificates and forensic-standard reports suitable for Board Risk Committee, regulatory audit, and legal proceedings.
AI-Augmented
AI-assisted signal classification and anomaly detection integrated into our Cyber TSCM capability.
Phones Stay On
Our whitelist system means approved executives never lose connectivity. Your business continues normally. Only surveillance is stopped.
NG
Regulatory Alignment
Operating fully within the Nigerian regulatory framework – NCC, NDPC, CBN CCSF – with professional affiliations to NCS, CPN, NITDA, and NDPC.
The Process
How It Works: From Enquiry to Clearance Certificate
A structured, confidential, professionally managed engagement. Six steps from your first
contact to a signed Clearance Certificate on your boardroom table.
contact to a signed Clearance Certificate on your boardroom table.
01
Confidential Enquiry
Contact us at engagement@redcastlecorp.com. Same-day acknowledgement. NDA executed before any sensitive briefing. Your identity and concerns are protected from the first contact.
02
Threat Assessment
Red Castle profiles your facility against the full threat taxonomy – passive, active RF, optical, acoustic, telecoms, and insider vectors – and recommends the appropriate service tier.
03
Proposal & Rules of Engagement
A scoped proposal is issued within 48 hours. On acceptance, Rules of Engagement govern every aspect of access, timing, reporting, and escalation.
04
Whitelist Pre-Population
Approved attendee phone numbers and devices are registered in advance. Your team is whitelisted and operational before the engagement day begins.
05
Professional Sweep
Our operators execute the full Red Castle sweep protocol on-site. Every finding is documented with photographic and electronic evidence. Incident response activates immediately if a device is found.
06
Clearance Certificate
Issued on-site at sweep completion. Full sweep report delivered within 24–48 hours. Board-grade documentation ready for Risk Committee, regulatory audit, or legal proceedings.
Is Your Boardroom Secure?
One undetected device can cost your organisation more than this engagement will ever cost. Red Castle finds it before it finds you.
