AI Risk Wire

Cases › security breach › LR-2026-0288

Fake Polymarket platforms use LLM chat agents with provider-switching to defraud victims

Preliminary Why: 1 report: Cyber Security News · subject to change · 1 independent report

Developing: a major or severe case captured in the last 72 hours. Later changes are logged on the corrections page.

security breach

Severity major: Many victims across multiple fake platforms lost cryptocurrency, with self-reported deposits of about $10.97 million, though the figures are unverified.

Earliest source we hold 2026-10-30 · Captured by AI Risk Wire 2026-10-31 02:29 UTC

Three Russian-speaking fraud teams (AtlasCore, PolyFucked, Magnetic Team) sell ready-made fake Polymarket-style prediction market sites to affiliates.

Risks this incident falls under

RiskRoleNIST AI 600-1IncidentsLast 6 quarters
AI used to run a cyber attackPrimaryInformation Security33
AI system attacked or breachedAlsoInformation Security1

Sorted by rule from the case's fields; not yet read from the sources.

Control failure chain

L1 · Model Not read yetProvider not named
L2 · Harness Not read yetHarness not named
L3 · Application Not read yetDeployer not named
L4 · Infrastructure / target Not read yetOrganisation hit

L1 · ModelProvider not namedModel provider

Sources not yet read for controls.

Model version not linked to a model card.

9 more for this risk at this layer
Outside red-teaming Not read yet

L2 · HarnessHarness not namedAgent framework vendor

Sources not yet read for controls.

L3 · ApplicationDeployer not namedDeployer

Sources not yet read for controls.

L4 · Infrastructure / targetOrganisation hitOrganisation hit

Sources not yet read for controls.

6 more for this risk at this layer
Known flaws patched Not read yet

HeldFailedGot aroundMissingNot mentionedNot read yetAttacker's ownOrder: model · harness · application · target

The same controls in other incidents of this risk

ControlLayerHereHeld elsewhereDid not hold elsewhere
Content safety classifiersL1 ModelNot read yet––
Safety training and refusalL1 ModelNot read yet–1
Cyber and weapons safeguardsL1 ModelNot read yet––
Dangerous-capability testing before releaseL1 ModelNot read yet––
Outside red-teamingL1 ModelNot read yet––
Staged or restricted releaseL1 ModelNot read yet––
Abuse monitoring and account enforcementL1 ModelNot read yet––
Reasoning monitoringL1 ModelNot read yet–1
Safeguards kept on in testingL1 ModelNot read yet––
Known flaws patchedL4 Infrastructure / targetNot read yet––
Multi-factor sign-in and password policyL4 Infrastructure / targetNot read yet––
Network segmentationL4 Infrastructure / targetNot read yet––
Intrusion and endpoint detectionL4 Infrastructure / targetNot read yet––
Backups and recoveryL4 Infrastructure / targetNot read yet––
Phishing and fraud filtersL4 Infrastructure / targetNot read yet––

Risk grouping: Not yet classified

No source we hold states: who caused it, intended or not, before or after release, the ai's part.

The story

1 · What it was doingFraud teams sold fake Polymarket-style prediction market sites to affiliates; the sites took crypto deposits, faked trading activity, and used a language model to answer victim support chats.
2 · What went wrongThe sites rigged every win and loss and blocked withdrawals behind fake fees and checks, taking victims' cryptocurrency.
3 · What it reached or didVictims' crypto deposits and personal data, including card numbers, CVV codes and passport photos, were collected across many fake domains.
4 · How it was caughtRecorded Future's Insikt Group researchers identified the three teams and the tools they sell.
5 · What was doneThe report names the teams and publishes indicators of compromise so security teams can block domains and IPs and watch for new lookalike domains.

No source states: when it happened, when it was found, how many records were exposed, a count of the other parties affected, any court case, the cause, what set it off.

Show every field, with its source and grade

The AI system

Software around the model
custom scaffold
D inferred by us from the described behaviour, reason shown
Stage of use
in live use
D inferred by us from the described behaviour, reason shown
How it was connected
built into a product
D inferred by us from the described behaviour, reason shown
What it was for
Answer support messages and translate victim replies into Russian on fake prediction market sites.
C one secondary source states it
State of its safeguards
If one model refuses a request, the system switches to a model from another provider.
C one secondary source states it

What happened

Earliest source we hold
2026-10-30
A the date the source itself carries
Who caught it
an independent researcher or journalist
C one secondary source states it
Themes
fake prediction market, cryptocurrency theft, withdrawal blocking, affiliate fraud, identity document harvesting, LLM support chat
D inferred by us from the described behaviour, reason shown
Who was responsible
an outside party
D inferred by us from the described behaviour, reason shown
Who caused it
an outside attacker
C one secondary source states it
What went wrong
security breach
D inferred by us from the described behaviour, reason shown
AI agent
no AI agent acted
D inferred by us from the described behaviour, reason shown

Impact

Severity
major
D inferred by us from the described behaviour, reason shown
Kind of harm
money, privacy
D inferred by us from the described behaviour, reason shown
Who was affected
Victims who deposit cryptocurrency on fake Polymarket-style prediction market sites
C one secondary source states it
Kinds of data exposed
card numbers, CVV codes, passport or driver's license photos, Selfie holding the document.
C one secondary source states it
Why this severity
Many victims across multiple fake platforms lost cryptocurrency, with self-reported deposits of about $10.97 million, though the figures are unverified.
D inferred by us from the described behaviour, reason shown

Context

Industry
Finance and Insurance
D inferred by us from the described behaviour, reason shown

LR-2026-0288 · version 2 · published 2026-10-31 after automatic checks; not yet checked field by field by a person · changes to this case · JSON