Experts at Mandiant have corroborated the DOJs data by releasing additional evidence not included in the original APT1 report. Charts indicate Unit 61398 operators were re-pointing their domain names at a Dynamic DNS provider during Chinese business hours in the period from 2008 to 2013. China accused US to have fabricated the evidence to American authorities to correct the error immediately If the facts will be confirmed the China is considerable responsible for years of cyber espionage to steal industrial secrets from US companies.”]
Source: http://securityaffairs.co/wordpress/25191/cyber-crime/fireeye-mandiant-apt1.html