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PyPI☠ CRITICALslopsquat⚠ ACTIVE THREAT

pandas-fast-io

First seen: Sep 5, 2026 0 viewsMimics: pandas
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Threat Description

A hallucinated 'fast IO' engine for pandas, recommended by AI as a drop-in speed-up for read_csv / to_parquet. No legitimate package by this name exists. Registered versions patch pandas' IO functions to silently upload a copy of every loaded DataFrame (including PII) to an object-storage bucket controlled by the attacker.

AI Hallucination Analysis
Very Likely AI Hallucination89%
Known to be hallucinated by: GPT-4, Claude 3 Opus, Copilot
Remediation Guide
  1. Uninstall pandas-fast-io immediately. 2. Use pandas.read_csv / pyarrow directly. 3. Treat every dataset loaded while the package was installed as potentially exfiltrated. 4. Rotate credentials for any storage the loaded datasets could reach. 5. Scan data-access logs for the egress bucket.
Quick Facts
Ecosystem
PyPI
Risk Level
CRITICAL
Type
slopsquat
Status
ACTIVE
Legitimate Package
pandas
Hallucination Confidence
89%
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