what is a banker? In terms of Adware, spyware etc? Is it dangerous? Could someone please explain.?

Let me try to explain this.
If you receive an email etc from a hacker and you open it it could contain a file that hides in your computer and sends you to a website with a IP address when that website is open it may contain a further file that will forward you again to a website with an different IP address in a different part of the world and this website again with a different IP address is the banker The one who steals your information and identity. Always ignore emails or files from anyone you do not know or trust and do not go to websites you are not sure of. Keep your anti virus checker up to date and a good firewall.

Learn about backdoor Trojan removal. – Banker Trojan info.