CartJacked researchers verify live checkout skimmers and malware lures
Guardio found live script injection, fake payment forms and ClickFix lures on compromised storefronts. Its October crawl estimate was about 12,200 hijacked shops. In sealed tests, code from 63 October shops captured a test card. The study does not count stolen customer cards.
- Disclosed
- Nov 9, 2026
- Public disclosure date
- Severity
- Septic Tank Blew
- No CVE: a breach, not a bug
- Splash zone
- Compromised e-commerce pages, including checkout pages serving a skimmer and storefronts presenting fake verification prompts.
- e-commerce · skimming · ClickFix
- In the wild
- Yes
- Guardio observed live malicious code and reproduced card capture with test data.
What happened
This is a set of observed campaigns. The figure of roughly 12,200 comes from an adjusted estimate across about 2.38 million stores in October Common Crawl data. The 63 figure comes from sealed tests on code from October shops and measures capture of test data. It does not measure customer losses. Guardio documented fake fields replacing legitimate payment frames, collection via external hosts or browser storage, and fake verification prompts that copy commands. Some kits suppressed the fake form for logged-in administrators. Test as a guest to cover that case.
Crime-scene timeline
Nov 9, 2026
Guardio publishes CartJacked measurements
The report separates crawl estimates, live storefront observations and sealed checkout testing.
Who said what
We list each claim and who made it. Primary sources (the vendor, the researcher, the registry) are marked. Where reports disagree, we grade by the worst credible case.
- Guardio Labs CartJacked reportPrimaryProvides crawl estimates, live checks, controlled test-card capture and indicators.