Panicking for not much - this is not a CC fraud …. Plenty of explanation on the web for a 404 error. Here is one…
Some like to stir #### for nothing..
What you need to know about 404 errors
404 errors are common, and if you're reading this, there's a good chance you've encountered one before. Most people find them when they try to go to a specific webpage that doesn't exist anymore.
What's happening is simply that your browser is asking a website to display something, the website can't find the right page to display, so it gives you an error instead.
Nearly every website has the potential to give you 404 errors. It's the easiest way to tell a user that they're in the wrong place. Even Business Insider has its own 404 pages, which display when you try to visit a page that doesn't exist.
That said, compared to the early days of the internet, finding 404 errors isn't as easy as it used to be. There are two reasons for this:
Most major websites now redirect users away from 404 pages automatically. If a website is planning to delete or unpublish a webpage, that page now usually gets redirected to a different page. As a visitor, you might not end up on the exact page you requested, but you won't be stranded on a 404 error page, either. As a result, there are fewer "broken" pages than there once were.
Many websites now have their own custom 404 pages, which help users more easily find what they're looking for. In some cases, these pages are so UI-friendly that it's hard to tell you've even hit a 404 error.