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Chinese hackers hit 30K US organisations in new attack

Chinese hackers hit 30K US organisations in new attack
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Chinese hackers hit 30K US organisations in new attack

Highlights

In yet another big cyber-attack after SolarWinds, at least 30,000 organisations across the US, including government and commercial firms have been hacked by China-based threat actors who used Microsoft's Exchange Server software to enter their networks.

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Washington: In yet another big cyber-attack after SolarWinds, at least 30,000 organisations across the US, including government and commercial firms have been hacked by China-based threat actors who used Microsoft's Exchange Server software to enter their networks.

According to KrebsOnSecurity, the China-based espionage group exploited four vulnerabilities in Microsoft Exchange Server email software.

The vulnerabilities allowed hackers to gain access to email accounts, and also gave them the ability to install malware, according to Microsoft which reported about the China-based threat actors but did not reveal the scale at which tens of thousands of organisations have been hit.

Two cybersecurity experts who have briefed US national security advisors on the attack told KrebsOnSecurity the Chinese hacking group seized control over "hundreds of thousands" of Microsoft Exchange Servers worldwide.

Exchange Server is primarily used by business customers. Microsoft has released several security updates to fix the vulnerabilities, advising its customers to install those immediately.

Earlier this week, Microsoft warned its customers against a new sophisticated nation-state cyber-attack that has its origin in China and is primarily targeting on-premises 'Exchange Server' software of the tech giant.

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