The FBI director revealed new details Wednesday about the stunning cyberattack against Sony Pictures Entertainment Inc. Wholesale AC Milan Hats , part of the Obama administration's effort to challenge persistent skepticism about whether North Korea's government was responsible for the brazen hacking.

Speaking at the International Conference on Cyber Security at Fordham University, FBI Director James Comey revealed that the hackers "got sloppy" and mistakenly sent messages directly that could be traced to IP addresses used exclusively by North Korea. Comey said the hackers had sought to use proxy computer servers, a common ploy hackers use to disguise their identities and throw investigators off their trail by hiding their true locations.

"It was a mistake by them," he said. "It made it very clear who was doing this."

The Associated Press reported Dec. 20 that the FBI had discovered that computer Internet addresses known to be operated by North Korea were communicating directly with other computers used to deploy and control the hacking tools and collect the stolen Sony files. The FBI previously said its evidence also included similarities to other tools developed by North Korea in specific lines of computer code, encryption algorithms and data deletion methods.

"I have very high confidence about this attribution to North Korea Wholesale Arsenal Hats , as does the entire intelligence community," Comey said.

North Korea has denied it was involved in the hacking.

Comey said the Sony attack had "clear links" to malware developed by North Korea, Comey said. The same tools were used in an attack last year on South Korean banks and media outlets, he said.

Finally, the FBI's Behavioral Analysis Unit studied statements and threats purporting to be from Guardians of Peace and compared them to other known attacks by the North Koreans Wholesale AS Roma Hats , Comey said. The unit told him, "Easy for us - it's the same actors," Comey said.

Comey said the evidence should undermine persistent skepticism by some cyber experts that individual hackers or a disgruntled insider were the culprits behind a hack that sabotaged the wide release of "The Interview," a comedy about a plot to kill North Korean leader Kim Jong Un.

"They don't have the facts that I have, don't see what I see Wholesale Atletico Madrid Hats ," he said.

Comey said he was hesitant to reveal more about how U.S. officials learned that North Korea was the source "because it will happen again, and we have to preserve our methods and sources."

Earlier Wednesday, Director of National Intelligence James Clapper also warned North Korea will continue the attacks against American interests unless the United States "pushes back."

Clapper told the audience of government and private cybersecurity experts that he had gained insight into North Korea's anti-American mindset while dining with a top North Korean general last year when he went there to negotiate the release of two U.S. prisoners. The general would have been the one to give the green light for the attack on Sony, he said.

North Koreans "really do believe they are under siege from all directions," and "are deadly Wholesale Chelsea Hats , deadly serious about affronts to the supreme leader," he said.

Earlier this week, Sony CEO Kazuo Hirai broke his silence about the attack, saying his employees were victims of a "vicious and malicious cyberattack," while adding that he's proud of them for standing against "the extortionist efforts of criminals."

Japanese Prime Minister Shinzo Abe (front C) and his cabinet members pose for photos at Abe's official residence in Tokyo Wholesale Barcelona Hats , Japan, Nov. 1, 2017. Japanese Prime Minister Shinzo Abe who was reappointed as the nation's leader on Wednesday retained all of his ministers in his relaunched cabinet. (XinhuaMa Ping)

TOKYO, Nov. 1 (Xinhua) -- As the leader of Japan's Liberal Democratic Party (LDP), Shinzo Abe was formally reelected as the country's prime minister on Wednesday while the realigning opposition forces continued calling for breaking the Abe dominance and further probing into a couple of cronyism scandals implicating the prime minister.

Abe Wholesale Bayern Munich Hats , who has been Japanese prime minister since December 2012, was reelected Wednesday by voting in both chambers of the Diet at a special parliamentary session, following the ruling LDP's sweeping victory in the Oct. 22 lower house election.

At a press conference following the launch of Abe's new cabinet which saw the premier retaining all his ministers, Abe reiterated his commitment to addressing Japan's population aging and low birthrate, what he had previously termed as the biggest challenges facing Japan.

He said that he would announce in early December an economic package worth 2 trillion yen (17.5 billion U.S. dollars) to bolster education and social welfare programs including free preschool education and day care services for children aged between three and five.

As for his long-term goal of revising the pacifist Constitution Wholesale Borussia Dortmund Hats , Abe said there is no time schedule yet, adding that he would like to work on building a consensus with opposition forces.

As part of Abe's campaign pledge and the LDP's fundamental party platform, Abe has been pushing for the first-ever amendment to Japan's pacifist Constitution, aiming for the supreme charter to explicitly make reference to Japan's Self-Defense Forces (SDF).

While pro-reform forces now comprise the two-thirds majority in both houses of parliament necessary needed for an amendment to the constitution to be formally proposed, the political and publicly divisive issue will also need the majority backing in a national referendum.

Speculations have been rising that Abe is likely to kick off a referendum by the end of next year's ordinary legislative session Wholesale Inter Milan Hats , which usually convenes in January, according to local reports.

Abe's goal of constitutional reform, however, has been opposed by the majority of Japanese people according to previous polls, .