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apple developer account:Microsoft says Chinese hackers targeted groups via server software

admin2021-05-2223

WASHINGTON — A China-linked cyberespionage group has been remotely plundering email inboxes using freshly discovered flaws in Microsoft mail server software, the company and outside researchers said on Tuesday (March 2) — an example of how commonly used programs can be exploited to cast a wide net online.rrIn a blog post, Microsoft said the hacking campaign made use of four previously undetected vulnerabilities in different versions of the software and was the work of a group it dubs HAFNIUM, which it described as a state-sponsored entity operating out of China.rrIn a separate blog post, cybersecurity firm Volexity said that in January it had seen the hackers use one of the vulnerabilities to remotely steal "the full contents of several user mailboxes."rrAll they needed to know were the details of Exchange server and of the account they wanted to pillage its emails, Volexity said.rrThe Chinese Embassy in Washington did not immediately return messages seeking comment. Beijing routinely denies carrying out cyberespionage despite numerous allegations from the United States and others.rrAhead of the Microsoft announcement, the hackers' increasingly aggressive moves began to attract attention across the cybersecurity community.rrMr Mike McLellan, director of intelligence for Dell Technologies's Secureworks, said he had noticed a sudden spike in activity touching Exchange servers overnight on Sunday, with around 10 customers affected at his firm.rrMicrosoft's near-ubiquitous suite of products has been under scrutiny since the hack of SolarWinds, the Texas-based software firm that served as a springboard for several intrusions across government and the private sector.rrIn other cases, hackers took advantage of the way customers set up their Microsoft services to compromise their targets or dive further into affected networks.rrHackers who went after SolarWinds also breached Microsoft itself, accessing and downloading source code — including elements of Exchange, the company's email and calendaring product.rrMr McLellan said the hacking activity he had seen appeared focused on seeding malicious software and setting the stage for a potentially deeper intrusion rather than aggressively moving into networks right away.rr"We haven't seen any follow-on activity yet," he said. "We're going to find a lot of companies affected but a smaller number of companies actually exploited."rrMicrosoft said targets included infectious disease researchers, law firms, higher education institutions, defense contractors, policy think tanks and non-governmental groups. REUTERSr
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