Netskope Threat Labs publishes a monthly summary blog post of the top threats we are tracking on the Netskope platform. The purpose of this post is to provide strategic, actionable intelligence on active threats against enterprise users worldwide.

A now fixed zero-day elevation of privilege (EoP) vulnerability in Microsoft Outlook (CVE-2023-23397) allows attackers to send craft emails to exploit Outlook. The vulnerability does not require user interaction to be exploited and runs even before the email is visualized in the preview pane of Outlook, which makes this vulnerability even more dangerous.

Trustwave’s MailMarshal received a major update this month with the addition of PageML to the Blended Threat Module. The BTM enables the email security solution to conduct in-depth, real-time scans when a URL in an email is clicked to determine if the URL is malicious. PageML boosts the BTM’s ability to detect malicious URLs by one-third by applying machine learning techniques to page content in real time. The new scanning feature is named PageML, short for Page Machine Learning.

The not-so-distant memories of security events like Log4Shell and the SolarWinds attack keep software supply chain attacks front of mind for developers. There are things organizations can do to detect and deter malicious supply chain attacks, including the recently mandated (as per the U.S. federal government) software bill of materials (SBOM).

As more and more businesses and individuals rely on technology and the Internet, cyber threats such as data breaches, malware attacks, and cyber extortion are becoming increasingly common. Overall, cyber insurance can help mitigate the financial, legal, and reputational risks associated with cyber incidents.