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Verizon is the latest big company to enter the post-Snowden market for secure communication, and it's doing so with an encryption standard that comes with a way for law enforcement to access ostensibly secure phone conversations.Verizon Voice Cypher, the product introduced on Thursday with the encryption company Cellcrypt, offers business and government customers end-to-end encryption for voice calls on iOS, Android, or BlackBerry devices equipped with a special app. The encryption software provides secure communications for people speaking on devices with the app, regardless of their wireless carrier, and it can also connect to an organization's secure phone system. Cellcrypt and Verizon both say that law enforcement agencies will be able to access communications that take place over Voice Cypher, so long as they're able to prove that there's a legitimate law enforcement reason for doing so. Seth Polansky, Cellcrypt's vice president for North America, disputes the idea that building technology to allow wiretapping is a security risk. "It's only creating a weakness for government agencies," he says. "Just because a government access option exists, it doesn't mean other companies can access it." 

Phone carriers like Verizon are required by U.S. law to build networks that can be wiretapped. But the legislation known as the Communications Assistance for Law Enforcement Act requires phone carriers to decrypt communications for the government only if they have designed their technology to make it possible to do so. If Verizon and Cellcrypt had structured their encryption so that neither company had the information necessary to decrypt the calls, they would not have been breaking the law.

There has been increased interest in encryption from individual consumers, too, largely thanks to the NSA revelations leaked by Edward Snowden. Yahoo and Google began offering end-to-end encrypted e-mail services this year. Silent Circle, a startup catering to consumer and enterprise clients, has been developing end-to-end voice encryption for phones calls. Verizon's service, with a monthly price of $45 per device, isn't targeting individual buyers and won't be offered to average consumers in the near future.But Verizon's partner, Cellcrypt, looks upon selling to large organizations as the first step toward bringing down the price before eventually offering a consumer-level encryption service. "At the end of the day, we'd love to have this be a line item on your Verizon bill," says Polansky.

Developers of the FreeBSD operating system will no longer allow users to trust processors manufactured by Intel and Via Technologies as the sole source of random numbers needed to generate cryptographic keys that can't easily be cracked by government spies and other adversaries. The change, which will be effective in the upcoming FreeBSD version 10.0, comes three months after secret documents leaked by former National Security Agency (NSA) subcontractor Edward Snowden said the US spy agency was able to decode vast swaths of the Internet's encrypted traffic. Among other ways, The New York Times, Pro Publica, and The Guardian reported in September, the NSA and its British counterpart defeat encryption technologies by working with chipmakers to insert backdoors, or cryptographic weaknesses, in their products. The revelations are having a direct effect on the way FreeBSD will use hardware-based random number generators to seed the data used to ensure cryptographic systems can't be easily broken by adversaries. Specifically, "RDRAND" and "Padlock"—RNGs provided by Intel and Via respectively—will no longer be the sources FreeBSD uses to directly feed random numbers into the /dev/random engine used to generate random data in Unix-based operating systems. Instead, it will be possible to use the pseudo random output of RDRAND and Padlock to seed /dev/random only after it has passed through a separate RNG algorithm known as "Yarrow." Yarrow, in turn, will add further entropy to the data to ensure intentional backdoors, or unpatched weaknesses, in the hardware generators can't be used by adversaries to predict their output.

"For 10, we are going to backtrack and remove RDRAND and Padlock backends and feed them into Yarrow instead of delivering their output directly to /dev/random," FreeBSD developers said. "It will still be possible to access hardware random number generators, that is, RDRAND, Padlock etc., directly by inline assembly or by using OpenSSL from userland, if required, but we cannot trust them any more." In separate meeting minutes, developers specifically invoked Snowden's name when discussing the change. "Edward Snowdon [sic] -- v. high probability of backdoors in some (HW) RNGs," the notes read, referring to hardware RNGs. Then, alluding to the Dual EC_DRBG RNG forged by the National Institute of Standards and Technology and said to contain an NSA-engineered backdoor, the notes read: "Including elliptic curve generator included in NIST. rdrand in ivbridge not implemented by Intel... Cannot trust HW RNGs to provide good entropy directly. (rdrand implemented in microcode. Intel will add opcode to go directly to HW.) This means partial revert of some work on rdrand and padlock."

The Obama administration has been tightlipped about its controversial naming of the North Korean government as the definitive source of the hack that eviscerated Sony Pictures Entertainment late last year. But FBI director James Comey is standing by the bureau’s conclusion, and has offered up a few tiny breadcrumbs of the evidence that led to it. Those crumbs include the claim that Sony hackers sometimes failed to use the proxy servers that masked the origin of their attack, revealing IP addresses that the FBI says were used exclusively by North Korea. Speaking at a Fordham Law School cybersecurity conference Wednesday, Comey said that he has “very high confidence” in the FBI’s attribution of the attack to North Korea. And he named several of the sources of his evidence, including a “behavioral analysis unit” of FBI experts trained to psychologically analyze foes based on their writings and actions. He also said that the FBI compared the Sony attack with their own “red team” simulations to determine how the attack could have occurred. And perhaps most importantly, Comey now says that the hackers in the attack failed on multiple occasions to use the proxy servers that bounce their Internet connection through an obfuscating computer somewhere else in the world, revealing IP addresses that tied them to North Koreans.

“In nearly every case, [the Sony hackers known as the Guardians of Peace] used proxy servers to disguise where they were coming from in sending these emails and posting these statements. But several times they got sloppy,” Comey said. “Several times, either because they forgot or because of a technical problem, they connected directly and we could see that the IPs they were using…were exclusively used by the North Koreans.” “They shut it off very quickly once they saw the mistake,” he added. “But not before we saw where it was coming from.” Comey’s brief and cryptic remarks—with no opportunity for followup questions from reporters—respond to skepticism and calls for more evidence from cybersecurity experts unsatisfied with the FBI’s vague statements tying the hack to North Korean government. In a previous public announcement the FBI had said only that it found “similarities in specific lines of code, encryption algorithms, data deletion methods, and compromised networks,” as well as IP addresses that matched prior attacks it knows to have originated in North Korea. At that time, the FBI also said it had further evidence matching the tools used in the attack to a North Korean hacking attack that hit South Korean banks and media outlets.

Following those elliptical statements, the cybersecurity community demanded more information be released to prove North Korea’s involvement. Some have even signed a petition on the White House website calling for more transparency in the investigation. Well-known security blogger and author Bruce Schneier has compared the FBI’s “trust us” mentality to the claims of the Bush administration about Saddam Hussein’s nonexistent weapons of mass destruction in the run-up to the Iraq War. Without more information, security experts themselves have remained deeply divided in their conclusions about who hacked Sony.