The hackers group responsible for the last year’s largest hacking attack on Sony Pictures Entertainment left many clues which proves that the Sony's hackers, who called themselves Guardians of Peace (GOP), linked to North Korea, as claimed by the Federal Bureau of Investigation (FBI).
Speaking at the International Conference on Cyber Security (ICCS) at Fordham University in New York on Wednesday, the director of the FBI defended his bureau's claim and said that the North Korean government was involved in the massive cyber attack against Sony Pictures – saying skeptics "don't have the facts that I have."
"There's not much I have high confidence about," James Comey said, as reported by the FBI New York field office's official Twitter feed. "I have very high confidence... on North Korea."
According to Comey, the hackers usually relied on proxy connections to hide their real IP address each time they sent threatening emails and made other statements; but unfortunately on some occasions they failed to follow precaution.
