![]() "The skimmer loads dynamically to avoid static malware scanners and uses unique encryption parameters for each victim to obfuscate the malicious code," Visa's alert reads. ![]() Evades detection and analysisīesides the regular basic skimming features like configurable target form fields and data exfiltration using image requests, Baka features an advanced design indicating that it is the work of a skilled malware developer and it also comes with a unique obfuscation method and loader. Last year, Visa discovered another JavaScript web skimmer known as Pipka that quickly spread to the online stores of "at least sixteen additional merchant websites" after being initially spotted on the e-commerce site of North American organizations in September 2019. The credit card stealing script was discovered by researchers with Visa's Payment Fraud Disruption (PFD) initiative in February 2020 while examining a command and control (C2) server that previously hosted an ImageID web skimming kit. ![]() Visa issued a warning regarding a new JavaScript e-commerce skimmer known as Baka that will remove itself from memory after exfiltrating stolen data.
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