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West Pharmaceutical warns of ransomware attack impacting business operations

Therecord.Media • May 12, 2026

West Pharmaceutical Services filed a report with the Securities and Exchange Commission (SEC) on Monday evening warning customers that a hacker breached the company network on May 4, stole data and encrypted systems.

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

West Pharmaceutical Faces Ransomware Attack Disrupting Operations West Pharmaceutical Services reported a ransomware attack that began on May 4, 2026, leading to a breach of their network. The attack resulted in data theft and system encryption, significantly impacting their manufacturing and distribution capabilities. The company filed a report with the SEC on May 12, 2026, notifying customers of the ongoing disruptions. As a key supplier in pharmaceutical packaging, the attack poses risks to global supply chains. The specific attack vector and tools used have not been disclosed in the articles. The current status indicates that operations are still affected, and the company is working to mitigate the impact. No specific CVEs or IOCs have been mentioned in the reports. 10 sources 52

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West Pharmaceutical warns of ransomware attack impacting business operations

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Extracted Entities

Attack Types (1)

Companies (1)

MITRE ATT&CK (2)