© Patrick Semansky, AP
A sign stands outside the National Security Administration campus in Fort Meade, Md.
"PRISM is not an undisclosed collection or data mining program," Director of National Intelligence James Clapper said in a fact sheet on the program.

The National Security Agency's classified PRISM program is an internal government computer system used to manage foreign intelligence collected from Internet and other electronic service providers, Director of National Intelligence James Clapper said in a statement Saturday.

The disclosure Saturday marks the most extensive explanation the government has offered of what the program is, how it works and what it is authorized to collect.

Clapper said he declassified the details of the NSA's surveillance and intelligence collection programs "in hope that it will help dispel some of the myths and add necessary context to what has been published" about government surveillance of Americans' phone records and foreigners' Internet use.

The National Security Agency and the FBI are siphoning personal data from the main computer servers of nine major U.S. Internet firms, The Washington Post and the London-based Guardian reported Thursday night. Clapper said those reports lacked context about how the program is governed.

The Guardian this week revealed that the government demanded millions of phone records from Verizon. On Saturday, the newspaper reported on a classified NSA data-mining program called "Boundless Informant" that allegedly records and analyzes where electronic intelligence comes from. The classified document shows NSA collected nearly 3 billion pieces of intelligence from U.S. computer networks in one month, the paper reported.

"Over the last week, we have seen reckless disclosures of intelligence community measures used to keep Americans safe. In a rush to publish, media outlets have not given the full context - including the extent to which these programs are overseen by all three branches of government - to these effective tools," Clapper said.

Comment: In other words, the context that the 'reckless' media missed is that the people who came up with the idea of spying on the population approve of it, and that has made everyone safer because these same people say so. Oh, that's alright then!

"PRISM is not an undisclosed collection or data mining program," Clapper said in a fact sheet that accompanied his statement.

The system manages foreign intelligence information collected under Section 702 of the Foreign Intelligence Surveillance Act, he said. "The authority was created by the Congress and has been widely known and publicly discussed since its inception in 2008," he said.

The program has yielded results, including providing insight into a terrorist organization's strategic planning efforts, intelligence about weapons of mass destruction proliferation networks and information about potential cyberthreats, the fact sheet said.

"This insight has led to successful efforts to mitigate these threats," the fact sheet said.

Clapper said Congress "after extensive public debate" reauthorized Section 702 in December. He and Attorney General Eric Holder provide "exhaustive" reports assessing compliance with targeting to Congress twice a year, Clapper said in the fact sheet. Congress also receives opinions from the Foreign Intelligence Surveillance Court, he said, and congressional intelligence and judiciary committees are regularly briefed.

The government "does not unilaterally obtain information from the servers of U.S. electronic communication service providers," Clapper added. "The notion that Section 702 activities are not subject to internal and external oversight is similarly incorrect. Collection of intelligence information under Section 702 is subject to an extensive oversight regime, incorporating reviews by the Executive, Legislative and Judicial branches."

The Foreign Intelligence Surveillance Court, which meets in secret, approves the information collection and the providers know about it, Clapper said. The decisions are based on "a written directive" from Holder and Clapper, the fact sheet said. Eleven federal judges, appointed by the chief justice of the Supreme Court, sit on the court.

Comment: So the Director of National Intelligence and the Attorney General provide the information to eleven federal judges on which they will base their decision to allow spying on civilians. Sounds like there is not much room for any decisions that the DNI and the AG do not want. Furthermore, all of this happens in secret so there is no way to verify or oversee the process. However, we are supposed to be satisfied with the explanation regarding how this is indeed being supervised by all branches of government - the same government who is spying on us.

"In short, Section 702 facilitates the targeted acquisition of foreign intelligence information concerning foreign targets located outside the United States under court oversight," the fact sheet said. "Service providers supply information to the government when they are lawfully required to do so."

Executives from Facebook, Google and Apple disputed reports that the companies have provided direct access to their servers for the National Security Agency and the FBI.

To target someone for such intelligence collection, the government must have "an appropriate, and documented, foreign intelligence purpose," such as for the prevention of terrorism, hostile cyberactivities, or nuclear proliferation, and the foreign target must be "reasonably believed to be outside the United States," the fact sheet said. Section 702 prohibits "intentionally" targeting any U.S. citizen or anyone known to be in the United States, the sheet said. The agency also cannot target a person overseas if the purpose is to get information from a person inside the United States, the sheet said.

Comment: How convenient that nowadays anyone can be suspected of terrorism or hostile cyberactivities for the most spurious reasons.

Also, notice that although they insist they leave the privacy of American citizens untouched, they share their data with British and other foreign allied intelligence. It makes us wonder if this is how all these government get around the 'don't spy on your own citizens' premise.You can spy on mine if you allow me to spy on yours.

"We cannot target even foreign persons overseas without a valid foreign intelligence purpose," the fact sheet said.

If the intelligence community intercepts communications for a person in the U.S., it cannot use the information unless it is needed to understand or assess the importance of foreign intelligence, is evidence of a crime, or indicates a threat of death or serious injury, the fact sheet said.

Targeting decisions are reviewed by the Office of the Director of National Intelligence and the Department of Justice, the fact sheet said.