Magecart Hackers Abuse Google Tag Manager to Inject Credit Card Skimmers

Cybersecuritynews •Tushar Subhra Dutta • May 12, 2026

Online shoppers have long been targets of digital theft, but a recent wave of attacks has raised the stakes in a troubling new way. Hackers tied to the notorious Magecart group are now hiding credit card skimmers inside Google Tag Manager (GTM) containers, turning a widely trusted web tool into a silent weapon against unsuspecting […]

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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.

Magecart Hackers Use Google Tag Manager for Credit Card Skimming Attacks Magecart attackers are exploiting Google Tag Manager (GTM) to stealthily inject credit card skimmers into ecommerce websites. This method leverages GTM's trusted status, making it difficult for site owners to detect malicious scripts. Online shoppers are particularly vulnerable as these skimmers can capture payment information without raising alarms. The attacks have been confirmed to affect multiple ecommerce platforms, although specific numbers of compromised sites have not been disclosed. Security experts warn that this trend could lead to a significant increase in digital theft incidents. The current status indicates ongoing exploitation, with no immediate resolution or patch available. Organizations are advised to review their GTM configurations and monitor for unusual activity. 2 sources 65

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Magecart Hackers Abuse Google Tag Manager to Inject Credit Card Skimmers

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Attack Types (1)

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