In the previous hacker attack codenamed Hafnium, hundreds of thousands of Microsoft Exchange servers worldwide were attacked, and a large number of small businesses and government departments were infected.
Microsoft’s security response department released a message on the 23rd, saying that the global 92% of exchange servers have fixed vulnerabilities or migrated addresses, and 43% of servers have been improved last week.
Our work continues, but we are seeing strong momentum for on-premises Exchange Server updates:
• 92% of worldwide Exchange IPs are now patched or mitigated.
• 43% improvement worldwide in the last week. pic.twitter.com/YhgpnMdlOX— Security Response (@msftsecresponse) March 22, 2021
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The statistical data comes from the research organization RiskIQ, and the number of vulnerable Exchange servers in the world has dropped to 29,966.
Microsoft released a Diagnostic tool, to help users determine whether the system is vulnerable to Hafnium attacks, and an emergency patch has also been released. Security software company F-Secure recommends server operation and maintenance personnel to use tools to check the system to see if the server is being used by hackers.
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