Google Security Engineer Arrested in Million-Dollar Polymarket Trading Scheme

Key Points:

• Michele Spagnuolo, a Google security engineer, was arrested in New York for allegedly using confidential Google data to place trades on Polymarket, a prediction market platform, from October to December 2025.
• He faces charges of commodities fraud, wire fraud, and money laundering, having reportedly earned $1.2 million by correctly predicting Google's most-searched person of 2025 using insider information.
• Polymarket cooperated with authorities in the investigation, highlighting that blockchain transactions are transparent and traceable, and the platform referred Spagnuolo's suspicious activity to law enforcement.
• This case marks the second US arrest related to illicit activity on prediction markets, following a similar incident involving a US Army officer, and has prompted increased scrutiny from lawmakers and regulators like the CFTC.
• Google has placed Spagnuolo on leave, condemning the misuse of confidential information, while Polymarket emphasizes its commitment to fair and transparent markets and ongoing collaboration with regulators.