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Tag: Microsoft Exchange servers

  • Security News

Over 2000 Exchange Servers Hacked Using ProxyShell Exploit

imageByVladimir KrasnogolovyAugust 26, 2021
Over 2000 Exchange Servers Hacked Using ProxyShell Exploit
Researchers at Huntress Labs estimate that over the past few days, about 2,000 Microsoft Exchange mail servers have been compromised and infected with backdoors, because their owners have not installed patches to fix ProxyShell vulnerabilities. Let me remind you that the

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  • Security News

Hackers exploit ProxyShell vulnerabilities to install backdoors

imageByVladimir KrasnogolovyAugust 16, 2021
Hackers exploit ProxyShell vulnerabilities to install backdoors
Experts warn that hackers are attacking Microsoft Exchange servers, exploiting ProxyShell vulnerabilities, and installing backdoors on them for subsequent access. Let me remind you that the vulnerabilities, which are collectively called ProxyShell, were recently discussed at

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  • Security News

GitHub Developers Review Exploit Posting Policy Due to Recent Scandal

imageByVladimir KrasnogolovyApril 30, 2021
GitHub Developers Review Exploit Posting Policy Due to Recent Scandal
The GitHub developers review the exploit posting policy and want to discuss with the information security community a series of changes to the site rules. These rules determine how employees deal with malware and exploits uploaded to the platform. The proposed changes imply

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  • Security News

Prometei botnet attacks vulnerable Microsoft Exchange servers

imageByVladimir KrasnogolovyApril 23, 2021
Prometei botnet attacks vulnerable Microsoft Exchange servers
Since the patches for ProxyLogon problems were still not installed, cybercriminals continue their activity, for example, the updated Prometei botnet attacks vulnerable Microsoft Exchange servers. Researchers from Cybereason Nocturnus discovered Prometei malware, which mines

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  • Security News

FBI removed web shells from vulnerable Microsoft Exchange servers without informing owners

imageByVladimir KrasnogolovyApril 14, 2021
FBI removed web shells from vulnerable Microsoft Exchange servers without informing owners
The US Department of Justice reported that a court in early April granted the FBI special powers and the bureau removed web shells previously installed by hackers on vulnerable Exchange servers in the United States. The FBI also had the power to remove other malware (without

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  • Security News

Hackers attack Microsoft Exchange servers on behalf of Brian Krebs

imageByVladimir KrasnogolovyMarch 30, 2021
Hackers attack Microsoft Exchange servers on behalf of Brian Krebs
The well-known information security expert, journalist and author of the KrebsOnSecurity blog has repeatedly become a target for attacks and mockery of hackers. Now hackers are attack Microsoft Exchange servers with Proxylogon vulnerabilities on behalf of Brian Krebs. The

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  • Security News

Valak malware steals corporate data using Microsoft Exchange servers

imageByVladimir KrasnogolovyMay 29, 2020
Valak malware steals corporate data using Microsoft Exchange servers
Cyberreason Nocturnus experts said that the Valak bootloader discovered in 2019 now exploits vulnerabilities in Microsoft Exchange servers. It has become a full-fledged info-staler and attacks companies in the USA and Germany. Researchers write that in the last six months,

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