From NPR News, this is ALL THINGS CONSIDERED. I'm Audie Cornish.
MELISSA BLOCK, HOST:
And I'm Melissa Block. The past 36 hours have brought us a splashy cover story claiming to have found the figure behind a shadowy multi-billion dollar enterprise, also a media circus replete with an OJ Simpson-like car chase through the streets of Los Angeles and an army of online debunkers intent on proving the article false.
There's a lot of talk about virtual currencies lately — how they work, economic implications and whether they're safe. But now a Native American tribe is using a bitcoin-like currency to help strengthen its sovereignty.
In South Dakota, the Oglala Lakota Nation has become the first Native American tribe to launch its own form of virtual currency. Payu Harris, its creator, calls it mazacoin.
Credit-card rivals Visa and MasterCard said Friday they have formed an industry-wide group aimed at improving payment security in the wake of a number of breaches that compromised customers' data.
"The recent high-profile breaches have served as a catalyst for much needed collaboration between the retail and financial services industry on the issue of payment security," Visa President Ryan McInerney said in the statement.