Ullrich Delevati CPAs notified clients that unauthorized 2015 tax returns were filed in their names. On March 15, 2016, a forensic investigation confirmed unauthorized access to client information, including names, addresses, dates of birth, Social Security numbers, and bank account numbers. The firm engaged forensic investigators, cooperated with the IRS and FBI, enhanced system security, and provided 24 months of credit monitoring and identity theft restoration services to affected individuals.