Investigation Methodology
Information Gap
An information gap is a question the available evidence does not answer: no source was found, a source exists but is inaccessible, or sources conflict without a way to resolve them. Recording gaps explicitly is a core discipline of evidence-first investigation because it stops assumption from filling the space where evidence should be. An unsuccessful search records a gap; it does not establish that the information, person or activity is absent. Gaps also direct the next step — a different identifier, a regional search, another Skill or an offline inquiry. Nexus results distinguish supported findings, possible matches, contradictions and information gaps, and BLUF situation briefs state their limitations alongside the conclusion.
Related OSINT terms
- Evidence-First InvestigationEvidence-first investigation is an approach in which every finding is tied to an inspectable source before it is presented, and…
- Finding (Intelligence)A finding is a verified piece of intelligence or evidence that has been validated and documented during an investigation. Findings…
- BLUF (Bottom Line Up Front)Bottom Line Up Front (BLUF) is a communication format originating from military intelligence that presents the most important information or…
- Possible MatchA possible match is a candidate record, profile, name or identifier that shares attributes with the subject of an investigation…
- Agentic OSINTAgentic OSINT is open-source intelligence in which an AI agent plans and carries out multi-step investigation workflows — source discovery…
- Investigative SkillAn investigative Skill is a focused, repeatable investigation workflow that answers one defined research question — for example, which public…
Related Skills
Investigative Skills in Nexus that apply Information Gap to a live case.
- Public-Source ResearchFind and compare public information about a subject, separating findings from assumptions and gaps.Pro & Agency
- Federated and Regional SearchBroaden discovery across regional and alternative search sources, including language-specific research.Pro & Agency
- Deep Public ResearchCombine relevant web, news, publication and directory evidence into a focused, cited investigation.Pro & Agency
- BLUF Situation BriefPresent the bottom line first, followed by the evidence, assessment and limitations that support it.Pro & Agency
- Extended Social PresenceExplore a wider range of public social and community sources for additional identity clues and profile candidates.Pro & Agency
- Public Email DiscoveryFind explicitly published email addresses and preserve their attribution and publication context without guessing addresses.Pro & Agency
