International Union of Bricklayers and Allied Craftworkers Share this article Share this article WASHINGTON, Jan. 6, 2021 /PRNewswire/ -- On June 29, 2020, International Union of Bricklayers and Allied Craftworkers ("BAC") discovered suspicious activity relating to certain BAC employee email accounts and instituted multifactor authentication. BAC immediately changed the passwords for the email accounts and began an investigation with assistance from outside computer forensics specialists to determine the nature and scope of the incident. The investigation determined that the employees' email accounts were subject to unauthorized access between June 4, 2020 and July 10, 2020. While BAC's investigation was able to confirm access to the accounts, the investigation was unable to rule out access to any emails or attachments within the accounts. As a result, and with the assistance of third-party forensics, BAC began an extensive review of the email accounts to determine whether they contained any sensitive information and to whom the information relates.