DLD Accountancy, LLP, a California-based CPA firm, disclosed a cybersecurity incident occurring on March 3, 2017, discovered on March 20, 2017. An unknown third party accessed the firm's Lacerte 2015 tax software, exposing client personal information including names, addresses, Social Security numbers, and 2015 compensation data. The firm reported the incident to law enforcement and the IRS, and offered one year of complimentary credit monitoring through Experian.