My job was terminated at a bank after an employment more than 2 and half years. The reason for termination was an inadvertent mistake of e-mail the client distribution list to my personal e-mail; the objective of the e-mail was to simply work at home during weekly time off as well as to send linkedin invites to the clients. I have background of having worked in the financial services industry where it is expected to work from home. Bank's position is the bank's proprietary information shouldn't be sent to personal e-mails & exposes the bank to reputational risk. I understand the position, however I am not sure how would a list of clients (which is like Canada 411 information with e-mails in excel format) would expose the bank to such risk(there is no other information of the clients on the list).

The major concern is the effect it may have on my future licensing. Without licensing, my career is finished.

Please advise.