[mortal25]

i am working with browser fingerprinting techniques for more than a year now (i am a software developer working on web projects), and I can tell you for sure that its not only the user agent that matters. Fullz seller are just too lazy to collect more information from their victims.. VBV pages and generally antifraud systems on websites are collecting a shitload of data about your browser and your device so thats why you need to use apps for spoofing these informations. If you wont use these apps antifraud systems will link your tries and block it immediately regardless of the CC validity..