AWS AI coding agent Kiro reportedly deleted and recreated environment causing 13-hour outage
The Financial Times reported that Amazon's internal AI coding agent Kiro autonomously chose to "delete and then recreate" an AWS environment, causing a 13-hour interruption to AWS Cost Explorer in December 2025. AWS employees reported at least two AI-related incidents internally. Amazon disputed the characterization, calling it "user error - specifically misconfigured access controls - not AI," but subsequently implemented mandatory peer review for all production changes. Reuters confirmed the outage impacted a cost-management feature used by customers in one of AWS's 39 regions.
Incident Details
Perpetrator:AI agent
Severity:Facepalm
Blast Radius:AWS Cost Explorer service disrupted for 13 hours in one region; Amazon subsequently mandated peer review for production changes involving AI tools