- Portfolio-level patterns — repeat claimants, shared details, reused documents — are invisible in single-claim review.
- Timing and value distributions expose process gaming that no individual claim proves.
- A scored, explainable queue turns these signals into work an investigator can act on the same day.
Ask most travel insurers where their fraud is and they will describe the obvious cases: the clearly fabricated claim, the receipt that does not add up. Those get caught. The fraud that actually erodes margin is the fraud that looks ordinary, one claim at a time, and only becomes visible when you look across the whole book. Here are five patterns we see again and again.
1. The plausible repeat claimant
A single lost-baggage or trip-cancellation claim is unremarkable. The same claimant making a similar claim across several policies, or several trips, is a pattern, and it is invisible if you only ever see one claim in front of you. Deduplication across policies and identities is the first thing a portfolio-level view restores.
2. The shared detail
Unrelated claimants who share a bank account, a device, an address or a phone number are rarely a coincidence. Organised fraud reuses infrastructure, and those shared attributes are the threads that connect an otherwise ordinary set of claims into a network worth investigating.
3. The reused document
The same invoice, medical report or receipt submitted across claims, sometimes lightly altered, is one of the clearest fraud signals there is. It is also one of the easiest to miss when documents are reviewed inside individual claim files and never compared to each other.
The fraud that hurts is not the claim that looks wrong. It is the claim that looks right, made a hundred times.
4. The suspicious timing
A claim filed days after a policy incepts, or clustered right before a cover change, is not proof of anything on its own. Across a book, though, timing anomalies concentrate in ways that chance does not explain, and they are a reliable place to point a scarce investigation resource.
5. The convenient value
Claims that sit consistently just below a documentation or authorisation threshold are gaming the process, not describing a loss. Individually each is within the rules. In aggregate, the distribution gives it away.
None of these five require exotic data. They require looking across the portfolio rather than down individual claim files, and attaching a reason to every flag so investigators can act on it. That is precisely what a scored, explainable fraud queue does.