The Internal Revenue Service and Security Summit partners today warned tax professionals to watch for phishing emails and other schemes designed to steal sensitive taxpayer data. SummarySecurity Summit Warning: The IRS and Security Summit partners are warning tax professionals about phishing schemes designed to steal sensitive client data. The IRS and Security Summit partners are warning tax professionals about phishing schemes designed to steal sensitive client data. Phishing, spear phishing, clone phishing, and whalingAmong the most common threats facing tax pros are phishing and related scams. Tax professionals can also share information with the appropriate state tax agency by visiting the Federation of Tax Administrators Report a Data Breach page.