An IRS investigation finds only a tiny percentage of virtual currency owners are declaring earnings on Bitcoin transactions in their annual returns.
The second largest bitcoin exchange for U.S. dollars says that some of its operational "wallets" were compromised.
After a year-long review, New York proposes regulations for virtual-currency firms.
If forced to do business in a virtual currency, finance will have to alter existing processes and invent new ones. Here's some of what it faces.
Why finance and treasury departments are keeping their distance from the virtual currency.
Law-enforcement officials agree that the benefits of a virtual currency like Bitcoin outweigh the risks, but they also insist Bitcoin needs regulation.
