Well...
Pretty much to "secure" a scammed account to the best of your ability you should really get full info. Name, Address, CD Keys, SQA, etc. The main two you should focus on however are the last name and the SQA (CD Key's are a big helper!).
Once you scammed/phish/aquire an account, you pretty much change the email at the link you provided and then you can either...
a) Try to keep the account (doesn't work very well)
b) Transfer the account to a blank account, with the same last name
c) Use the account as a scamming account to acuire gold and other goodies
Pretty much that's the things you can do. If you need anymore help post here, or contact me on MSN - [email protected]