"Contrary to some suggestions, the IRS does not use emails to target taxpayers. Any suggestion to the contrary is wrong," the IRS added in its statement. It did not directly comment on whether email is used for audits and whether warrants are required. "The Justice Department is holding that any data about you that is elsewhere—email on Gmail, Facebook posts, documents stored in Dropbox, etc.—can be gotten without a warrant," says network security specialist Schneier. He says the IRS, which shares data with other law enforcement agencies, has claimed similar powers and "people should be aware of it."