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Some of Rackspace’s hosted Microsoft Exchange services have been taken down by what the company has described as a “security incident”. The company’s most recent incident report at the time of writing, time-stamped 01:57 Eastern Time on December 3rd, offers Read More …
FORT MEADE, Md. — The National Security Agency (NSA), the Cybersecurity and Infrastructure Security Agency (CISA), and the FBI released a Cybersecurity Advisory today that details the tactics, techniques and procedures (TTPs) that likely multiple advanced persistent threat (APT) groups Read More …
Microsoft has shared mitigations for two new Microsoft Exchange zero-day vulnerabilities tracked as CVE-2022-41040 and CVE-2022-41082, but researchers warn that the mitigation for on-premise servers is far from enough. Threat actors are already chaining both of these zero-day bugs in Read More …
Added information about Exploit:Script/ExchgProxyRequest.A, Microsoft Defender AV’s robust detection for exploit behavior related to this threat. Microsoft also removed a section on MFA as a mitigation, which was included in a prior version of this blog as standard guidance. Microsoft Read More …
Microsoft is investigating two reported zero-day vulnerabilities affecting Microsoft Exchange Server 2013, Exchange Server 2016, and Exchange Server 2019. The first one, identified as CVE-2022-41040, is a Server-Side Request Forgery (SSRF) vulnerability, and the second one, identified as CVE-2022-41082, allows Read More …
Following on from Kaspersky earlier Owowa discovery, Kaspersky researchers continued to hunt for more backdoors potentially set up as malicious modules within IIS, a popular web server edited by Microsoft. And they didn’t come back empty-handed… In 2021, Kaspersky noticed Read More …
Security researchers have found a new post-exploitation framework that they dubbed IceApple, deployed mainly on Microsoft Exchange servers across a wide geography. IceApple is described as being “highly sophisticated,” its developer prioritizing keeping a low profile for long-term objectives in Read More …
Cyber-criminals are using compromised Microsoft Exchange servers to spam out emails designed to infect people’s PCs with IcedID. IcedID is bad news because if you’re tricked into running it, it opens a backdoor allowing further malware, such as ransomware, to Read More …
Attackers are gnawing on the ProxyLogon and ProxyShell vulnerabilities in Microsoft Exchange Server to hijack email chains, by malspamming replies to ongoing email threads, researchers say. What’s still under discussion: whether the offensive is delivering SquirrelWaffle, the new email loader Read More …
This joint cybersecurity advisory is the result of an analytic effort among the Federal Bureau of Investigation (FBI), the Cybersecurity and Infrastructure Security Agency (CISA), the Australian Cyber Security Centre (ACSC), and the United Kingdom’s National Cyber Security Centre (NCSC) Read More …
