National Public Radio

The National Security Agency says it did not know about a critical security bug until it recently became public.

The NSA was responding to a report from Bloomberg that the agency had known about the vulnerability known as "Heartbleed" for two years and instead of alerting the tech community, it exploited the bug to "gather critical intelligence."

In a statement, the NSA said Bloomberg's report was simply "wrong." The US, the NSA said, would reveal this kind of vulnerability to developers if it ever came upon it.

The funding of a social media platform designed to undermine the Cuban government was not a covert American operation, White House Press Secretary Jay Carney said during his regular press briefing.

"The program referred to by the Associated Press was a development program run by the United States agency for International Development and that program was completed in 2012," Carney said. "As you know, USAID is a development agency not an intelligence agency." Carney went on to say that the US does take steps to be discreet when operating in "non-permissive environments."

Flip on Daystar television at any hour of the day and you'll likely see the elements of modern televangelism: a stylish set, an emotional spiritual message and a phone number on the screen soliciting donations.

Based in a studio complex between Dallas and Fort Worth, Texas, and broadcasting to a potential audience of 2 billion people around the globe, Daystar calls itself the fastest growing Christian television network in the world. The Internal Revenue Service considers Daystar something else: a church. Televangelists have a choice when they deal with the IRS. Some, like Pat Robertson and Billy Graham, register as religious organizations. They're exempt from most taxes but still must file disclosure reports showing how they make and spend their money.

Daystar and dozens of others call themselves churches, which enjoy the greatest protection and privacy of all nonprofit organizations in America. Churches avoid not only taxes, but any requirement to disclose their finances. And, as NPR has learned, since 2009, churches have avoided virtually any scrutiny whatsoever from the federal government's tax authority.