An anonymous reader quotes a report from CNN: A team of suspected Chinese hackers has infiltrated US software developers and law firms in a sophisticated campaign to collect intelligence that could help Beijing in its ongoing trade fight with Washington, cybersecurity firm Mandiant said Wednesday. The hackers have been rampant in recent weeks, hitting the cloud-computing firms that numerous American companies rely on to store key data, Mandiant, which is owned by Google, said. In a sign of how important China's hacking army is in the race for tech supremacy, the hackers have also stolen US tech firms' proprietary software and used it to find new vulnerabilities to burrow deeper into networks, according to Mandiant. [...] In some cases, the hackers have lurked undetected in the US corporate networks for over a year, quietly collecting intelligence, Mandiant said. The disclosure comes after the Trump administration escalated America's trade war with China this spring by slapping unprecedented tariffs on Chinese exports to the United States. The tit-for-tat tariffs set off a scramble in both governments to understand each other's positions. Mandiant analysts said the fallout from the breaches -- the task of kicking out the hackers and assessing the damage -- could last many months. They described it as a milestone hack, comparable in severity and sophistication to Russia's use of SolarWinds software to infiltrate US government agencies in 2020.Read more of this story at Slashdot.