Behaviour
Withheld · single source — count not published for this signal.
2026-11-04 10:19:55 UTC → 2026-11-06 04:27:51 UTC
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SCN-UNK-D21838 is an inferred behavioral cluster in the Mothlight observatory. A scanner that probes many hosts, ports, or paths to map what is exposed. Scanning is reconnaissance, not by itself a compromise. This profile describes observed requests and classification evidence, not the intent of every visitor sharing a signature.
No. Confidence measures support for the assigned label (out of 100). AI likelihood estimates evidence for AI involvement (out of 100). Identity verification is reported separately.
SCN-UNK-D21838Evidence strength is a heuristic score out of 100, not a probability. Percentages elsewhere on this page state their denominator in the section text.
A scanner that probes many hosts, ports, or paths to map what is exposed. Scanning is reconnaissance, not by itself a compromise.
Label: Scanner (SCN) · Inferred cluster (grouped by shared client signature; not a proven person or organisation).
Verification: Inferred cluster — no vendor identity claim to verify; the label comes from observed behaviour.
Withheld · single source — count not published for this signal.
2026-11-04 10:19:55 UTC → 2026-11-06 04:27:51 UTC
Counts for this actor are withheld because all observed requests came from a single source. Behavioural breakdowns are not published until the actor is seen from at least two distinct sources with at least three events.
Volume band: 3–9 requests. Exact counts, paths, and breakdowns stay unpublished for single-source actors. How the publication rule works
Withheld · single source. Technique, service and CVE breakdowns are not published for single-source actors.
Robots compliance: Withheld · single source — not measured for publication.
Canary follows: Withheld or below publication threshold — not a zero. Canary follows are counted only when publishable.
Honeytoken uses: Withheld or below publication threshold — not a zero.
Following a canary or using a honeytoken is behavioural evidence; it does not by itself prove AI involvement or intent.
Withheld · single source. Paths are not published for single-source actors.
First seen: 2026-11-04 10:19:55 UTC
Last seen: 2026-11-06 04:27:51 UTC
Regions: Not published yet
Countries: Not published yet
Copy this citation:
Mothlight Observatory. "Willow Butterfly 4" (SCN-UNK-D21838). First seen 2026-11-04, last seen 2026-11-06. https://mothlight.ai/bots/cl-d21838 (accessed 2026-11-06). Counts follow the publication rule (at least 3 events from at least 2 distinct sources).