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WASHINGTON (AP) -- The Obama administration has been quietly advising local police not to disclose details about surveillance technology they are using to sweep up basic cellphone data from entire neighborhoods, The Associated Press has learned. Citing security reasons, the U.S. has intervened in routine state public records cases and criminal trials regarding use of the technology. This has resulted in police departments withholding materials or heavily censoring documents in rare instances when they disclose any about the purchase and use of such powerful surveillance equipment. Federal involvement in local open records proceedings is unusual. It comes at a time when President Barack Obama has said he welcomes a debate on government surveillance and called for more transparency about spying in the wake of disclosures about classified federal surveillance programs.

One well-known type of this surveillance equipment is known as a Stingray, an innovative way for law enforcement to track cellphones used by suspects and gather evidence. The equipment tricks cellphones into identifying some of their owners' account information, like a unique subscriber number, and transmitting data to police as if it were a phone company's tower. That allows police to obtain cellphone information without having to ask for help from service providers, such as Verizon or AT&T, and can locate a phone without the user even making a call or sending a text message. But without more details about how the technology works and under what circumstances it's used, it's unclear whether the technology might violate a person's constitutional rights or whether it's a good investment of taxpayer dollars. Interviews, court records and public-records requests show the Obama administration is asking agencies to withhold common information about the equipment, such as how the technology is used and how to turn it on. That pushback has come in the form of FBI affidavits and consultation in local criminal cases.

"These extreme secrecy efforts are in relation to very controversial, local government surveillance practices using highly invasive technology," said Nathan Freed Wessler, a staff attorney with the American Civil Liberties Union, which has fought for the release of these types of records. "If public participation means anything, people should have the facts about what the government is doing to them." Harris Corp., a key manufacturer of this equipment, built a secrecy element into its authorization agreement with the Federal Communications Commission in 2011. That authorization has an unusual requirement: that local law enforcement "coordinate with the FBI the acquisition and use of the equipment." Companies like Harris need FCC authorization in order to sell wireless equipment that could interfere with radio frequencies. A spokesman from Harris Corp. said the company will not discuss its products for the Defense Department and law enforcement agencies, although public filings showed government sales of communications systems such as the Stingray accounted for nearly one-third of its $5 billion in revenue. "As a government contractor, our solutions are regulated and their use is restricted," spokesman Jim Burke said.

President Obama plans to announce legislation Tuesday that would shield companies from lawsuits for sharing computer threat data with the government in an effort to prevent cyber­attacks. On the heels of a destructive attack at Sony Pictures Entertainment and major breaches at JPMorgan Chase and retail chains, Obama is intent on capitalizing on the heightened sense of urgency to improve the security of the nation’s networks, officials said. “He’s been doing everything he can within his executive authority to move the ball on this,” said a senior administration official who spoke on the condition of anonymity to discuss legislation that has not yet been released. “We’ve got to get something in place that allows both industry and government to work more closely together.”

The legislation is part of a broader package, to be sent to Capitol Hill on Tuesday, that includes measures to help protect consumers and students against ­cyberattacks and to give law enforcement greater authority to combat cybercrime. The provision’s goal is to “enshrine in law liability protection for the private sector for them to share specific information — cyberthreat indicators — with the government,” the official said. Some analysts questioned the need for such legislation, saying there are adequate measures in place to enable sharing between companies and the government and among companies.

“We think the current information-sharing regime is adequate,” said Mark Jaycox, legislative analyst at the Electronic Frontier Foundation, a privacy group. “More companies need to use it, but the idea of broad legal immunity isn’t needed right now.” The administration official disagreed. The lack of such immunity is what prevents many companies from greater sharing of data with the government, the official said. “We have heard that time and time again,” the official said. The proposal, which builds on a 2011 administration bill, grants liability protection to companies that provide indicators of cyberattacks and threats to the Department of Homeland Security.

Prominent activists, lawmakers, artists, academics, and other leading voices in civil society, including Sen. Bernie Sanders (I-Vt.), are joining the campaign to get a pardon for National Security Agency (NSA) whistleblower Edward Snowden. “The information disclosed by Edward Snowden has allowed Congress and the American people to understand the degree to which the NSA has abused its authority and violated our constitutional rights,” Sanders wrote for the Guardian on Wednesday. “Now we must learn from the troubling revelations Mr. Snowden brought to light. Our intelligence and law enforcement agencies must be given the tools they need to protect us, but that can be done in a way that does not sacrifice our rights.” Pentagon Papers whistleblower Daniel Ellsberg, who co-founded the public interest journalism advocacy group Freedom of the Press Foundation, where Snowden is a board member, also wrote, “Ed Snowden should be freed of the legal burden hanging over him. They should remove the indictment, pardon him if that’s the way to do it, so that he is no longer facing prison.” Snowden faces charges under the Espionage Act after he released classified NSA files to media outlets in 2013 exposing the U.S. government’s global mass surveillance operations. He fled to Hong Kong, then Russia, where he has been living under political asylum for the past three years.

The Pardon Snowden campaign, supported by the American Civil Liberties Union (ACLU), Amnesty International, and Human Rights Watch (HRW), urgespeople around the world to write to Obama throughout his last four months in the White House.

The United States and its key intelligence allies are quietly working behind the scenes to kneecap a mounting movement in the United Nations to promote a universal human right to online privacy, according to diplomatic sources and an internal American government document obtained by The Cable. The diplomatic battle is playing out in an obscure U.N. General Assembly committee that is considering a proposal by Brazil and Germany to place constraints on unchecked internet surveillance by the National Security Agency and other foreign intelligence services. American representatives have made it clear that they won't tolerate such checks on their global surveillance network. The stakes are high, particularly in Washington -- which is seeking to contain an international backlash against NSA spying -- and in Brasilia, where Brazilian President Dilma Roussef is personally involved in monitoring the U.N. negotiations.

The Brazilian and German initiative seeks to apply the right to privacy, which is enshrined in the International Covenant on Civil and Political Rights (ICCPR), to online communications. Their proposal, first revealed by The Cable, affirms a "right to privacy that is not to be subjected to arbitrary or unlawful interference with their privacy, family, home, or correspondence." It notes that while public safety may "justify the gathering and protection of certain sensitive information," nations "must ensure full compliance" with international human rights laws. A final version the text is scheduled to be presented to U.N. members on Wednesday evening and the resolution is expected to be adopted next week. A draft of the resolution, which was obtained by The Cable, calls on states to "to respect and protect the right to privacy," asserting that the "same rights that people have offline must also be protected online, including the right to privacy." It also requests the U.N. high commissioner for human rights, Navi Pillay, present the U.N. General Assembly next year with a report on the protection and promotion of the right to privacy, a provision that will ensure the issue remains on the front burner.

Publicly, U.S. representatives say they're open to an affirmation of privacy rights. "The United States takes very seriously our international legal obligations, including those under the International Covenant on Civil and Political Rights," Kurtis Cooper, a spokesman for the U.S. mission to the United Nations, said in an email. "We have been actively and constructively negotiating to ensure that the resolution promotes human rights and is consistent with those obligations." But privately, American diplomats are pushing hard to kill a provision of the Brazilian and German draft which states that "extraterritorial surveillance" and mass interception of communications, personal information, and metadata may constitute a violation of human rights. The United States and its allies, according to diplomats, outside observers, and documents, contend that the Covenant on Civil and Political Rights does not apply to foreign espionage.

In a post on Wednesday, researchers Alex Halderman and Nadia Heninger presented compelling research suggesting that the NSA has developed the capability to decrypt a large number of HTTPS, SSH, and VPN connections using an attack on common implementations of the Diffie-Hellman key exchange algorithm with 1024-bit primes. Earlier in the year, they were part of a research group that published a study of the Logjam attack, which leveraged overlooked and outdated code to enforce "export-grade" (downgraded, 512-bit) parameters for Diffie-Hellman. By performing a cost analysis of the algorithm with stronger 1024-bit parameters and comparing that with what we know of the NSA "black budget" (and reading between the lines of several leaked documents about NSA interception capabilities) they concluded that it's likely NSA has been breaking 1024-bit Diffie-Hellman for some time now. The good news is, in the time since this research was originally published, the major browser vendors (IE, Chrome, and Firefox) have removed support for 512-bit Diffie-Hellman, addressing the biggest vulnerability. However, 1024-bit Diffie-Hellman remains supported for the forseeable future despite its vulnerability to NSA surveillance. In this post, we present some practical tips to protect yourself from the surveillance machine, whether you're using a web browser, an SSH client, or VPN software. Disclaimer: This is not a complete guide, and not all software is covered.

A contractor working for the National Security Agency (NSA) was arrested by the FBI following his alleged theft of “state secrets.” More specifically, the contractor, Harold Thomas Martin, is charged with stealing highly classified source codes developed to covertly hack the networks of foreign governments, according to several senior law enforcement and intelligence officials. The Justice Department has said that these stolen materials were “critical to national security.” Martin was employed by Booz Allen Hamilton, the company responsible for most of the NSA’s most sensitive cyber-operations. Edward Snowden, the most well-known NSA whistleblower, also worked for Booz Allen Hamilton until he fled to Hong Kong in 2013 where he revealed a trove of documents exposing the massive scope of the NSA dragnet surveillance. That surveillance system was shown to have targeted untold numbers of innocent Americans. According to the New York Times, the theft “raises the embarrassing prospect” that an NSA insider managed to steal highly damaging secret information from the NSA for the second time in three years, not to mention the “Shadow Broker” hack this past August, which made classified NSA hacking tools available to the public.

Snowden himself took to Twitter to comment on the arrest. In a tweet, he said the news of Martin’s arrest “is huge” and asked, “Did the FBI secretly arrest the person behind the reports [that the] NSA sat on huge flaws in US products?” It is currently unknown if Martin was connected to those reports as well.

It also remains to be seen what Martin’s motivations were in removing classified data from the NSA. Though many suspect that he planned to follow in Snowden’s footsteps, the government will more likely argue that he had planned to commit espionage by selling state secrets to “adversaries.” According to the New York Times article on the arrest, Russia, China, Iran, and North Korea are named as examples of the “adversaries” who would have been targeted by the NSA codes that Martin is accused of stealing. However, Snowden revealed widespread US spying on foreign governments including several US allies such as France and Germany. This suggests that the stolen “source codes” were likely utilized on a much broader scale.