Pierluigi Paganini
August 23, 2021
US CISA issued an urgent alert to warn admins to address ProxyShell vulnerabilities on-premises Microsoft Exchange servers. The US Cybersecurity and Infrastructure Security Agency (CISA) issued an alert to warn admins to address actively exploited ProxyShell vulnerabilities on-premises Microsoft Exchange servers. ProxyShell is the name of three vulnerabilities that could be chained by an unauthenticated […]
Pierluigi Paganini
July 28, 2021
A joint report published by US, UK, and Australian cyber security agencies warns of the top routinely exploited vulnerabilities in 2020. The U.S. Cybersecurity and Infrastructure Security Agency (CISA), the Australian Cyber Security Centre (ACSC), the United Kingdom’s National Cyber Security Centre (NCSC), and the U.S. Federal Bureau of Investigation (FBI) published a Joint Cybersecurity […]
Pierluigi Paganini
July 28, 2021
A China-linked cyberespionage group, tracked as PKPLUG, employed a previously undocumented strain of a RAT dubbed THOR in recent attacks. A China-linked cyberespionage group tracked as PKPLUG (aka Mustang Panda and HoneyMyte), which is known for targeting Southeast Asia, exploited vulnerabilities in the Microsoft Exchange Server to deploy a previously undocumented variant of PlugX on compromised systems. Researchers […]
Pierluigi Paganini
May 03, 2021
Security researcher released technical details and a PoC code for a high-severity vulnerability in Microsoft Exchange Server reported by the NSA. A security expert released technical details and proof-of-concept exploit (PoC) code for the high-severity vulnerability CVE-2021-28482 in Microsoft Exchange that could be exploited by remote attackers to execute arbitrary code on vulnerable systems. April […]
Pierluigi Paganini
April 26, 2021
Attackers are exploiting the ProxyLogon flaws in Microsoft Exchange to recruit machines in a cryptocurrency botnet tracked as Prometei. Experts from the Cybereason Nocturnus Team have investigated multiple incidents involving the Prometei Botnet. The attackers hit companies in North America and threat actors exploited the ProxyLogon Microsoft Exchange flaws (CVE-2021-27065 and CVE-2021-26858) to deliver malware in their networks. Attackers […]
Pierluigi Paganini
April 14, 2021
FBI log into web shells that hackers installed on Microsoft Exchange email servers across the US and removed the malicious code used by threat actors. A US judge granted the FBI the power to log into web shells that were injected by nation-state hackers on Microsoft Exchange servers across the US and remove the malware, […]
Pierluigi Paganini
April 13, 2021
Microsoft patch Tuesday security updates address four high and critical vulnerabilities in Microsoft Exchange Server that were reported by the NSA. Microsoft patch Tuesday security updates released today have addressed four critical and high severity vulnerabilities in Exchange Server (CVE-2021-28480, CVE-2021-28481, CVE-2021-28482, CVE-2021-28483), some of these flaws were reported by the U.S. National Security Agency (NSA). All the […]
Pierluigi Paganini
April 02, 2021
The DHS CISA has issued a supplemental directive that requires all federal agencies to identify vulnerable Microsoft Exchange servers in their infrastructure within five days. The Department of Homeland Security’s Cybersecurity and Infrastructure Security Agency (CISA) has issued a supplemental directive requiring all federal agencies to identify Microsoft Exchange servers in their environments impacted by […]
Pierluigi Paganini
March 25, 2021
The CyberNews investigation team found 62,174 potentially vulnerable unpatched Microsoft Exchange Servers. A number of entities in the US and worldwide remain vulnerable to software bugs that were reported by Microsoft weeks ago. The CyberNews investigation team found 62,174 potentially vulnerable unpatched Microsoft Exchange Servers. The vulnerability is still being actively exploited, most famously by […]
Pierluigi Paganini
March 24, 2021
Security experts reported that a second ransomware gang, named Black Kingdom, is targeting Microsoft Exchange servers. After the public disclosure of ProxyLogon vulnerabilities, multiple threat actors started targeting vulnerable Microsoft Exchange servers exposed online. The first ransomware gang exploiting the above issues in attacks in the wild was a group tracked as DearCry. Last crew […]
