In a caller ID attack, the spoofer will falsify the phone number he/she is calling from.
URL spoofing is when scammers set up a fraudulent website to obtain information from victims or to install viruses on their computers. For instance, targets might be directed to a site that looks like it's from their credit card company and be asked to log in. If one falls for it and actually logs in, the scammer could then log onto the real site and commit mishap by using the account information the victim used to log in. (For more, see: 6 Ways To Protect Yourself From Cybercrime)
Be extremely cautious whenever you receive a message asking for personal information and only download files from trusted sources. Install firewalls to block suspicious inquiries and keep antivirus software installed and up-to-date on any computer you use. If you get an inquiry seeking personal information, don't provide it. Hang up (or log off) and then independently look up the phone number or customer service email address from the entity purportedly contacting you for your personal information.