With the first half of 2024 behind us, it's clear that companies are continuing to prioritize cybersecurity projects to strengthen defenses and enhance operations. In this newsletter, I wanted to share exciting cybersecurity updates from Messageware, as well as important industry news. Z-Day Guard cybersecurity solution New Version Available: We are excited to announce that [...]

A sophisticated keylogger has been found embedded in the main login page of Microsoft Exchange Servers, stealing account credentials from unsuspecting users. The malicious code was discovered by Positive Technologies' Expert Security Centre (PT ESC) during an incident response operation. The keylogger records usernames and passwords entered on the Exchange login page and stores them [...]

Great news! Microsoft has announced exciting developments for the future of on-premises Exchange with the introduction of Exchange Server SE set to launch early in Q3 of 2025. This new subscription edition (SE) will arrive just as support for Exchange Server 2019 concludes on October 14, 2025. Administrators should note the tight timeline for transition [...]

Microsoft has released Hotfix Updates (HUs) that enable support for new functionality and address issues in the March 2024 Security Update (SU). The April 2024 HU is available for the following builds of Exchange Server: Exchange Server 2019 CU13 and CU14 Exchange Server 2016 CU23 New Features The April 2024 HU introduce support for elliptic curve cryptography (ECC) certificates and [...]

In the summer of 2023, Microsoft faced a major cybersecurity crisis when Chinese state-sponsored hackers managed to breach the email accounts of several U.S. government officials and organizations through Microsoft's Exchange Online software. The incident, which affected over 500 individuals and 22 organizations, has been described as a "cascade of security failures" by the U.S. [...]

If you're a Windows administrator, you might want to hold off on installing the latest March 2024 Windows Server updates. Widespread reports have surfaced of domain controllers crashing and restarting after applying these updates, causing headaches for IT professionals and disruptions for businesses. The Culprit: LSASS Memory Leak The root of the problem appears to [...]

Description of Security Update 5 for Exchange Server 2019: March 12, 2024 (KB5036402) The March 2024 SUs address vulnerabilities responsibly reported to Microsoft by security partners and found through Microsoft’s internal processes. Although we are not aware of any active exploits in the wild, our recommendation is to immediately install these updates to protect your [...]

Tens of thousands of Microsoft Exchange servers worldwide could be vulnerable to a recently disclosed zero-day privilege escalation vulnerability that is already being actively exploited by threat actors. The vulnerability, tracked as CVE-2024-21410, allows a remote, unauthenticated attacker to relay a user's Windows NT LAN Manager (NTLM) credentials or "hashes" to impersonate legitimate users on [...]

2024 H1 Cumulative Update for Exchange Server Microsoft announced the availability of the 2024 H1 Cumulative Update (CU) for Exchange Server 2019 (aka CU14). CU14 includes fixes for customer reported issues, a security change, and all previously released Security Updates (SUs). FEATURED PRODUCT Z-Day Guard for Servers Next generation threat hunting for zero-day attacks on [...]

Feb 13, 2024, users connecting to Exchange Online with the latest version of Outlook Desktop are being impacted, as reported today by Petri and Windows Report news sites. The issue has been occurring since early February and is under investigation by Microsoft. The ActiveSync issues are specific to those with 365 Exchange Online, and those [...]

CVE-2024-21410 is a critical security vulnerability in Microsoft Exchange Server with a CVSS severity score of 9.8. The vulnerability allows attackers to perform privilege escalation attacks by exploiting NTLM credential leaking in clients like Outlook. Key Details Attack Method: An attacker targets NTLM clients (like Outlook) to leak credentials, which can then be relayed against [...]

On January 19th, Microsoft disclosed that a group of Russian state-sponsored hackers, known as Nobelium or Midnight Blizzard, infiltrated its corporate systems and accessed sensitive emails from members of its leadership team. New details have now emerged explaining how the attackers gained entry and what they were after. The initial breach occurred in late November [...]