This site examines the uses, security, and privacy of “whois” data.
“Whois” data is the registration information that is publically available related to domain names and IP address registration. This information can be used to verify the ownerships of web sites and IP addresses but can also be a source of attack.
A typical domain whois record looks like this. Click on the specific areas of the record to see how it can be attacked:
Domain Administrator, HELP.org whois412@HELP.org
PO Box 1860 Ocean City, NJ 08226 US
Record last updated on 12-Apr-2012.
Record expires on 10-May-2013.
Record created on 10-May-2004.