“The Internal Revenue Service (IRS), commonly thought of as accountants with the power to garnish wages and seize property, is also a law enforcement agency with the power to spy on communications, so it’s not totally surprising that it has typically followed Supreme Court precedent regarding law enforcement’s broad spying powers when it comes to emails more than 180 days old. However, in a ruling issued December 2010, the Sixth Circuit Court of Appeals ordered the IRS to always obtain a warrant before rifling through emails, no matter how old, contained on services like Gmail and Yahoo Mail, which otherwise have significantly less privacy protections.”
