I have a cafe in Nigeria where fraud is rampant by using stolen credit card information. These cards are used in most of the internet cafe. Is there any software I can installed on every client connected to the internet that will prevent or block the use of credit card or the website as soon as checkout is clicked or before it is clicked? Please help me as I'm in dare need of any software that can do this.
as this is not something I have ever come across before. If I understand the question rightly you wish to stop criminals from using your internet cafe to purchase goods online, not stop them paying you with stolen credit cards.
Since buying online requires secure encryption, perhaps it is possible to disable all the encryption options in your browser. You could try asking on the Opera Security/Privacy Forum: click here
In Opera Preferences, one can disable Security protocols, which would stop anyone using a credit card on some less secure sites. Any user could easily re-enable them, though there might be a way to make that difficult such as Opera's Kiosk mode.
The help file says: "Security protocols are used to communicate securely with sites where sensitive data, such as credit card information, is involved.
Disable SSL 2, SSL 3, and ciphers below 128 bits to prevent connections to less secure Web services. If you experience problems on secure sites, try re-enabling them."
I do not accept Credit Card as payment method. I just want a software that I can use on all the client that will immediately, as setup, detect and block any credit card during checkout. Or Prevent using credit cards at all.