Aitel had claimed back in August that British security researcher Marcus Hutchins could be behind the ransomware that attacked more than 300,000 Windows computers in 150 countries in May. The US attribution appears to have put paid to Aitel's claims.
US Homeland Security adviser Tom Bossert told a briefing at the White House on Tuesday that after intensive investigation, the US was publicly attributing the attack to North Korea.
Hutchins was hailed as a hero by many after he accidentally stopped the spread of WannaCry by registering a domain that was present in the malware's code. He was later arrested in Las Vegas over alleged charges of having created a banking trojan named Kronos, along with an unnamed co-conspirator.
"What I think happened is that MalwareTech (the name that Hutchins was known by before he became famous and his real name was divulged) had something to do with WannaCry, and he knew about the killswitch, and when WannaCry started getting huge and causing massive amounts of damage (say, to the NHS of his own country) he freaked out and 'found the killswitch'," Aitel wrote.
"This is why he was so upset to be outed by the media. Being afraid to take the limelight is not a typical 'White Hat' behaviour, to say the least."
iTWire has contacted Aitel for his take on the attribution of WannaCry to North Korea and where his theory about Hutchins stands now.