Coinbase Informs 13K Affected Customers Of Imminent Data Handover To IRS   US-based cryptocurrency exchange and wallet service Coinbase sent an official notice Friday, Feb. 23 to approximately 13,000 of its customers whose information it is legally required to turn over to the US Internal Revenue Service (IRS).   The IRS had initially asked Coinbase in July 2017 to hand over even more detailed information on every one of its then over 500,000 users in an attempt catch those cheating…