The Canadian Bar Association advises that it has noted "unauthorized activity" related to member information: CBA Personal Information Advisory.
Michael Geist quotes from the notification the CBA has sent to affected members:
Michael Geist - Canadian Bar Association Hit By Security Breach
Your records may have been affected by this unauthorized activity. The files contained personal information relating to online orders (name, address, phone, fax, member number) and encrypted credit card information. We have no reason to believe that the encrypted credit card information was compromised. CBA uses one of the most secure encryption solutions available to protect credit card information. As a precautionary measure, we recommend that members monitor their credit card accounts for suspicious activity.