A new report from the Acronis Threat Research Unit has uncovered a vulnerability in Microsoft Exchange Online settings that could enable email spoofing attacks.
This issue primarily affects users with a hybrid configuration of on-premises Exchange and Exchange Online, and those utilizing third-party email security solutions. In July 2023, Microsoft introduced a major change in how it handles DMARC (Domain-based Message Authentication, Reporting, and Conformance) within Microsoft Exchange. This update was intended to bolster security by enhancing how email servers verify incoming emails’ legitimacy. Unfortunately, despite clear guidance from Microsoft, a considerable number of users have yet to implement these security measures.
Read more…
Source: TechRadar News
Related:
- Patch Tuesday – June 2025
June 10, 2025
Microsoft is addressing 67 vulnerabilities this June 2025 Patch Tuesday. Microsoft has evidence of in-the-wild exploitation for just one of the vulnerabilities published today, and that is reflected in CISA KEV. Separately, Microsoft is aware of existing public disclosure for one other freshly published vulnerability. Microsoft’s luck holds for a ninth consecutive Patch Tuesday, since neither ...
- ConnectWise rotating code signing certificates due to security concerns
June 9, 2025
ConnectWise is updating the digital signing certificates used in ScreenConnect, ConnectWise Automate, and ConnectWise RMM due to concerns raised by a third-party researcher about how ScreenConnect handled certain configuration data in earlier versions. In addition to issuing new certificates, ConnectWise is releasing an update to improve how this configuration data is managed in ScreenConnect. This issue ...
- Fortinet Flaws Exploited by Qilin Ransomware
June 8, 2025
Fortinet was recently found to have certain vulnerabilities that hackers like the Qilin group exploited. Here’s how they manipulated these weaknesses: Misconfigurations in security appliances provided a direct entry point for Qilin.Outdated Software: Failure to update Fortinet software allowed the ransomware to exploit known vulnerabilities. Qilin also employs social engineering tactics to gain unauthorized access: Phishing Attacks: Targeting employees ...
- Analysis of the latest Mirai wave exploiting TBK DVR devices with CVE-2024-3721
June 6, 2025
The abuse of known security flaws to deploy bots on vulnerable systems is a widely recognized problem. Many automated bots constantly search the web for known vulnerabilities in servers and devices connected to the internet, especially those running popular services. These bots often carry Remote Code Execution (RCE) exploits targeting HTTP services, allowing attackers to embed ...
- Cisco Releases Security Advisory Affecting Cisco Identity Service Engine
June 5, 2025
Cisco has released software updates for its Identity Service Engine (ISE). The updates address a critical severity vulnerability in the ISE product. Cisco Identity Services Engine (ISE) is a context-aware policy service to control access and threats across wired, wireless, and VPN networks. CVE-2025-20286 has a CVSSv3 score of 9.9 and is a “use of hard-coded ...
- Roundcube Releases Security Updates for Webmail
June 4, 2025
Roundcube has released versions 1.6.11 and 1.5.10 for its Webmail product. The updated versions address a critical severity vulnerability in the Webmail product. CVE-2025-49113 has a CVSSv3 score of 9.9 and is a “deserialisation of untrusted data” vulnerability. An authenticated remote attacker could exploit this vulnerability to achieve remote code execution. Read more… Source: NHS Digital Sign up for ...