Recently, I received 3 spams sent to the unique email address I gave
Ameritrade.  I called them to ask about it and after "investigating",
they concluded they don't give out their data to anyone and have no
idea how it happened.  I said I wanted to close my account and wanted
the transfer out fees waived, which they agreed to.  I suggest anyone
who is concerned about this problem and wants to close their account,
ask for the transfer out fee to be waived and feel free to say they did
that for me!  My account is in the process of being transferred out
now, but just today I received more spam to my unique Ameritrade email
address.  Also, a friend of mine, who also uses unique email addresses
for every company he does business with, has been receiving several
spams to his Ameritrade address.  Sounds they they have a problem
keeping their data secure.