Investigation Knowledge Hub

Glossary, methodologies and legal frameworks — curated by Shay Madar.

Investigation & Intelligence Glossary

TSCM

Technical Surveillance Countermeasures — professional sweep operations to detect and neutralize listening devices, hidden cameras and other surveillance equipment.

OSINT

Open Source Intelligence — intelligence gathered from publicly available sources: social media, corporate filings, public records, news archives.

Due Diligence

A comprehensive investigation and analysis performed on a person, company or investment before entering a business relationship or major transaction.

RF Sweep

Radio Frequency sweep — scanning the electromagnetic spectrum to detect unauthorized wireless transmitters such as listening devices and hidden cameras.

Asset Tracing

Investigation methodology to locate hidden, transferred or concealed assets — bank accounts, real estate, investments — typically in legal proceedings.

Digital Forensics

Recovery and investigation of material found in digital devices — computers, phones, servers — to uncover evidence for legal proceedings.

Chain of Custody

The documented, chronological record of the collection, transfer and analysis of physical or digital evidence — critical for court admissibility.

Spyware

Malicious software installed covertly on a device to monitor activity, steal data, record calls or track location without the user's knowledge.

HUMINT

Human Intelligence — intelligence gathered through personal contacts, interviews, social engineering and field observation rather than technical means.

SIGINT

Signals Intelligence — intelligence derived from electronic signals and systems — including communications (COMINT) and electronic emissions (ELINT).

Covert Surveillance

Monitoring a subject without their knowledge using concealed operatives, hidden cameras, GPS trackers or remote digital tools.

Shell Company

A company with no significant assets or operations, typically used to conceal ownership of assets, income or financial transactions.

SOCMINT

Social Media Intelligence — the collection and analysis of information from social media platforms to build intelligence profiles or locate individuals.

Surveillance Detection

The art and science of identifying whether you are being watched or followed — a core skill for corporate security, executive protection and anti-surveillance.

Background Investigation

A comprehensive inquiry into a person's history — criminal records, financial history, employment history, education, litigation records and reputational standing.

Wire Transfer Tracing

Investigation methodology to follow money through financial institutions — identifying origin, routing and destination of transferred funds.

Investigation Methodologies

The ProYeda Investigation Process

  1. 1Initial confidential consultation — understanding the case objectives
  2. 2Scope definition and investigation plan
  3. 3Intelligence gathering phase (OSINT, HUMINT, field)
  4. 4Analysis and pattern recognition
  5. 5Documentation and evidence packaging
  6. 6Court-ready report delivery and expert testimony if required

TSCM Sweep Protocol

  1. 1Pre-sweep briefing and facility assessment
  2. 2RF spectrum scan (20MHz – 6GHz)
  3. 3Non-linear junction detection (NLJD)
  4. 4Thermal and infrared camera sweep
  5. 5Optical counter-surveillance search
  6. 6Network and telecommunications audit
  7. 7Secure report and device disposal