A weakness in certain configurations of Microsoft Exchange enables attackers to send an email from any user to a vulnerable organization. That's according to Swiss cybersecurity firm InfoGuard, which ...

Microsoft has warned of a high-severity zero-day vulnerability that could lead to an attacker sending arbitrary code to a victim by sending a specially crafted email to an Outlook user. The flaw, ...

Microsoft warns of an actively exploited Exchange Server zero-day flaw, CVE-2026-42897, urging administrators to use the Emergency Mitigation Service until a patch arrives. Saturday brings a fresh set ...

If MS Outlook is not activated, most of its features (including Recall This Message and Resend This Message) will be greyed out or disabled. If this is the reason for your problem, you must activate ...

Coordinating meetings with external clients while including internal team members can be a logistical challenge. The traditional method of juggling Outlook calendars and lengthy emails often leads to ...

If you run a Windows environment, you already know how critical PowerShell is. It’s the backbone of modern administration, used for automation, configuration, and day-to-day operations at scale. And ...

Microsoft announced on Monday that it will soon block mobile devices running outdated email software from accessing Exchange Online services until they're updated. As the Exchange Team explained, ...

The Granfeldt PowerShell Management Agent (PSMA) is a highly flexible ECMA for Forefront Identity Manager 2010 (FIM) R2 and Microsoft Identity Manager 2016. Although the MA can be deployed to perform ...

In February 2025, we discovered that the Gamaredon tool PteroGraphin was used to restart Turla’s Kazuar backdoor on a machine in Ukraine. In April and June 2025, we detected that Kazuar v2 was ...

Microsoft has released an advisory for a high-severity security flaw affecting on-premise versions of Exchange Server that could allow an attacker to gain elevated privileges under certain conditions.

Forbes contributors publish independent expert analyses and insights. Davey Winder is a veteran cybersecurity writer, hacker and analyst. As regular readers of the cybersecurity section here at Forbes ...