Magecart credit card skimmers have been able to steal credit card details from unaware online shoppers without attracting too much attention. The Ticketmaster and British Airways breaches put this growing threat under the spotlight and finally raise awareness among online merchants and consumers. New evasion techniques adapted for client-side web skimmers used to conceal their fraudulent activity are being developed. They include a technique that may be helpful in detecting anomalous files. The technique is a natural reaction, not limited to web skimming, but one that applies to any malicious enterprise.”]
Source: https://blog.malwarebytes.com/threat-analysis/2019/12/new-evasion-techniques-found-in-web-skimmers/