Unpatched or Unsupported Microsoft Exchange Servers Can Expect an SMTP 450 Error

On Monday, March 24th, 2023, Microsoft announced that it is enabling a transport-based enforcement system in Exchange Online serving three functions: reporting, throttling, and blocking.

Unpatched or Unsupported Microsoft Exchange Servers Can Expect an SMTP 450 Error2023-04-04T09:32:32-04:00

Microsoft Outlook Privilege Elevation Vulnerability (CVE-2023-23397)

CISA added a zero-day vulnerability affecting Microsoft Outlook that is actively exploited in the wild. Microsoft has released a patch for the vulnerability as part of their March 2023 Patch Tuesday.

Microsoft Outlook Privilege Elevation Vulnerability (CVE-2023-23397)2023-04-12T12:39:15-04:00

VMware Cloud Foundation remote code execution vulnerability via XStream (CVE-2021-39144)

CISA identified VMware products to the CVE-2021-39144 vulnerability in its Known Exploited Vulnerabilities (KEV) catalog following confirmation from VMware that this bug is being exploited since December 2022.

VMware Cloud Foundation remote code execution vulnerability via XStream (CVE-2021-39144)2023-04-04T11:30:07-04:00

Citrix Gateway & Citrix ADC remote code exploit (CVE-2022-27518)

Apply latest patch to mitigate zero-day vulnerability CVE-2022-27518 — A vulnerability has been discovered in Citrix Gateway and Citrix ADC, listed below, that, if exploited, could allow an unauthenticated remote attacker to perform arbitrary code execution on the appliance.

Citrix Gateway & Citrix ADC remote code exploit (CVE-2022-27518)2022-12-16T15:07:16-05:00

Microsoft Making Hybrid Work More Secure with New Windows 11 Security Features

Microsoft is stepping up its game to protect Hybrid Workers from cyber threats. The new Windows 11 security features aim to address the ever-growing security concerns of hybrid workers. — What do these new features help with? Read more.

Microsoft Making Hybrid Work More Secure with New Windows 11 Security Features2022-10-06T07:33:21-04:00

IT Security Alerts to Keep an Eye On: Spring4Shell, Citrix CVEs, iManage Certificate Expirations (April 2022)

Managing your IT has become complex – contact Cornerstone.IT and learn how our Managed Services can help support the health of your network. IT Security Alerts to Keep an Eye On: Spring4Shell, Citrix CVEs, iManage Certificate Expirations April 13, 2022 Contact Cornerstone The following alerts were issued — (click or tap to expand) Spring4Shell Spring4Shell critical security alert – targeting Java Script FrameworkSome products being affected: CitrixCiscoVMware Citrix Security Advisory – Multiple CVE Citrix StoreFront [...]

IT Security Alerts to Keep an Eye On: Spring4Shell, Citrix CVEs, iManage Certificate Expirations (April 2022)2022-04-13T08:16:59-04:00

Increase Cyber Vigilance as the Ukraine Conflict Escalates

Increase Cyber Vigilance as the Ukraine Conflict Escalates By Patrick Boyd, CSA With the current conflict and state actors targeting firms, enterprises, and governments, we need to be more aware and careful about our online interactions. Sophisticated attacks are well vetted and can be personal in nature; they have psychological and social aspects that make them appealing and/or disarming. Here at Cornerstone, we always want everyone to stay safe. Cyber-attacks are a constant threat and [...]

Increase Cyber Vigilance as the Ukraine Conflict Escalates2022-02-24T12:16:21-05:00

iManage Security Vulnerability due to third-party Apache component Log4j

If not mitigated, potential remote exploits to an Apache component called Log4J can be executed by a malicious attacker. This vulnerability is known worldwide as CVE-2021-44228. Check this iManage Security Advisory.

iManage Security Vulnerability due to third-party Apache component Log4j2022-12-13T14:54:40-05:00