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Feb 1, 2026 · Information Security

How a Fired Contractor Crippled a Major US Company with a Simple PowerShell Script

In May 2021, a dismissed IT contractor exploited weak account deprovisioning at Waste Management, used a self‑written PowerShell script to reset thousands of passwords, shutting down the entire corporate network and causing over $860,000 in losses, highlighting the severe risk of insider threats.