Behaviour
Withheld · single source — count not published for this signal.
2026-11-05 14:42:22 UTC → 2026-11-05 14:42:22 UTC
Loading…
EXP-UNK-1B423B is an inferred behavioral cluster in the Mothlight observatory. An exploit bot that sends requests designed to trigger a known vulnerability. An attempt is not evidence of 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.
EXP-UNK-1B423BEvidence strength is a heuristic score out of 100, not a probability. Percentages elsewhere on this page state their denominator in the section text.
An exploit bot that sends requests designed to trigger a known vulnerability. An attempt is not evidence of compromise.
Label: Exploit bot (EXP) · 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.
2026-11-05 14:42:22 UTC → 2026-11-05 14:42:22 UTC
Withheld · single source — count not published for this signal.
2026-11-05 14:42:22 UTC → 2026-11-05 14:42:22 UTC
Withheld · single source — count not published for this signal.
2026-11-05 14:42:22 UTC → 2026-11-05 14:42:22 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: Fewer than 3 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 Exact counts, paths, and breakdowns stay unpublished for single-source actors.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.
No related bots above the similarity threshold.
No publishable related actors yet. Related actors are publishable bots sharing a known-bot identity, cluster label, or technique set; withheld single-source actors are not listed here.
Withheld · single source. Paths are not published for single-source actors.
First seen: 2026-11-05 14:42:22 UTC
Last seen: 2026-11-05 14:42:22 UTC
Regions: Not published yet
Countries: Not published yet
Copy this citation:
Mothlight Observatory. "Marble Leafhopper 4" (EXP-UNK-1B423B). First seen 2026-11-05, last seen 2026-11-05. https://mothlight.ai/bots/cl-1b423b (accessed 2026-11-08). Counts follow the publication rule (at least 3 events from at least 2 distinct sources).