A hacker group from China on Sunday reiterated it is neither admitting nor accepting media reports that it had attacked the computer systems of several major airports and two websites in Vietnam in support of China's sovereignty over the South China Sea.

On Friday afternoon Braden Smith Colts Jersey , some flight information screens at both Noi Bai International Airport in Hanoi and Tan Son Nhat International Airport in Ho Chi Minh City have been compromised to display offensive messages toward Vietnam and the Philippines, Vietnam Tuoi Tre News reported Friday.

The airports were forced to shut down their computer systems and switch to manual operations, which led to flights delays, said the report.

The websites of Vietnam Airlines and the Vietnam Football Federation were also hacked, the newspaper said.

Video uploaded on YouTube showed messages saying "China's territorial inviolability," "Vietnam Darius Leonard Colts Jersey , the Philippines, only the United States, Japan restrict China's pawn" and "a warning from China 1937CN team" appeared on the screens and websites.

The newspaper said that the data of about 411,000 of the airline company's VIP customers was reportedly leaked and uploaded on the Internet.

1937CN team founder Liu Yongfa on Sunday reiterated his team's stance of neither admitting nor deny the attacks.

He told the Global Times that "1937CN is a non-government organization. We do not want to be a victim of the politics."

"At a time when the definition of a cyber crime remains vague in China, our team will start a cyber war to defend the country and the people when their sovereignty and rights are violated by foreign countries," Liu said.

Founded in 2008 by people engaged in network technology Quenton Nelson Colts Jersey , the 1937CN team joined the Sino-Japanese network warfare in 2012 and the Sino-Vietnamese version in 2013, according to Liu.

"The team has engaged in cyber security technology research in recent years. Many of the members work in cyber security companies," said Liu.