Use wechat scan QR code to share with friends and circle of friends_ blank" href=" https://news.163.com/news/search?keyword=%E7%BE%8E%E5%9B%BD "> the U.S. < / a > has encountered the most serious foreign war in history_ blank" href=" https://news.163.com/news/search?keyword=%E9%BB%91%E5%AE%A2 "> hackers < / a > attack, the United States first pointed the behind the scenes to Russia, and now some people still want to rely on China. On February 3, local time, Reuters quoted five people familiar with the matter as saying that in the attack last year, it was suspected that Chinese hackers also used the system vulnerability of solarwinds software to invade the system of the national finance center under the US Department of agriculture. However, even the US Department of agriculture does not have a unified approach to this issue. < p > < p > Reuters report screenshot < / P > < p > two sources familiar with the case said that the FBI recently found that the national finance center, a federal salary agency under the US Department of agriculture, is also one of the organizations attacked by hackers, and they are worried that the data of thousands of federal employees may have been leaked. < / P > < p > the report claims that the software vulnerabilities suspected to be exploited by Chinese hacker gangs are different from those previously accused by the US of being exploited by Russian hackers. US media claimed that the latter used Orion network, the monitoring software of Solarwind Company, to invade 18000 Solarwind customers, including sensitive US government departments. This is an American information technology company, providing software and network services for enterprises in many countries. < / P > < p > security researchers have previously said that while Russian hackers are said to have invaded Solarwind, the second group of hackers are also abusing Solarwind's software. However, it has not been reported that the second group of hackers are related to China, and they subsequently invaded the US government system. According to Reuters, it is uncertain how many organizations have been attacked by suspected Chinese hackers. When talking about the ongoing investigation, a source claimed that the hackers used the computer infrastructure and hacking tools previously used by Chinese cyber spies "supported by the state". < / P > < p > Solarwind said that one of its customers was attacked by the second batch of hackers, but "no conclusive evidence has been found" to indicate who should be responsible. The intruders did not enter the internal system, and they released an update to fix the vulnerability in December last year. < / P > < p > four external experts who have investigated the hacker attack claim that although the two cyber espionage activities overlap and are aimed at the US government, they are separate and completely different operations. < / P > < p > < strong style = "list style: none;" > the United States Department of agriculture has yet to unify its internal views on this issue. A spokesman for the Department said in an email that they had informed all customers whose data had been leaked. Another spokesman said that the national finance center had not been attacked by hackers and that there was "no data leakage related to Solarwind". < / strong > < / P > < p > in fact, as early as in the United States, the initial speculation by other countries "< a target ="_ blank" href=" https://news.163.com/news/search?keyword=%E7%BD%91%E7%BB%9C%E6%94%BB%E5%87%BB "> cyber attack < / a >", then US President trump and Secretary of state Pompeo had different opinions. Pompeo said at the time that he was "very sure" that Russia was behind the scenes. However, a few hours later, trump tweeted that China was behind the scenes. < p > < p > in response, foreign ministry spokesman Wang Wenbin refuted that China is one of the biggest victims of hacker attacks. China has always firmly opposed and cracked down on cyber attacks and cyber crimes in any form. China firmly opposes politicizing and stigmatizing the issue of network security, which will not help solve the problem of hacker attacks. On the contrary, it will weaken mutual trust among countries and affect their normal cooperation in this field. < strong style = "list style: none;" > on the issue of network security, the United States has its own bad deeds and is the country least qualified to tell other countries what to do.