Version 3.4.0
August 12, 2026
Every cluster now reports how much its members actually agree with one another across the data observed on them: the services they run, the certificates they present, and the fingerprints those services produce. Until now, judging a cluster meant judging how consistently the methods placed it. That says nothing about whether the hosts inside it have anything in common, and the two can disagree. Content purity is measured on every job, including the ones where there is nothing to check the answer against.
- A Second Axis, Next to Consensus Confidence
The Cluster Confidence table gains a purity figure beside the confidence it already showed. Consensus confidence answers how consistently the methods placed these hosts together; content purity answers how much the hosts themselves agree. Where the two diverge is worth a look in its own right: methods agreeing while the content disagrees usually means the cluster was drawn on something narrower than a shared fingerprint, and content agreeing while the methods hesitate often points at a real profile split across more than one cluster.
- Read Against the Run, Not Out of a Hundred
The figure has no fixed scale, and it is not a grade. It is the spread between clusters within one run that separates a coherent device profile from a grouping whose members merely sit near each other. A cluster at the low end of its own run is the one to open first.
- Which Clusters Resemble Each Other, and Why
Each row expands to name the clusters this one most resembles, each with the share of its defining signals the two have in common, followed by the signals they share and the ones unique to this cluster. Heavy overlap with little that is unique is the signature of one fingerprint the run divided; strong distinct signals on both sides mean two genuinely separate ones.
- Not Measured Is Not a Low Score
A cluster too small to compare, or one whose members carry nothing comparable, is reported as not measured rather than as zero. The same applies to the resemblance view: a cluster that shares no signal with any other simply shows none.