Category: Cyber Security News

20 Best Network Monitoring Tools in 2025

A network monitoring tool is software or hardware that helps businesses monitor their computer networks and learn more about their security, health, and performance. These tools record and examine network traffic, monitor network hardware, and give users immediate access to…

Microsoft 365 Exchange Online Outage Blocks Email on Outlook Mobile App

Microsoft is investigating a significant service incident within Exchange Online, identified as EX1137017, which is preventing some users from sending or receiving emails through the Outlook mobile application. The issue, which remains ongoing, specifically impacts customers utilizing Hybrid Modern Authentication…

Microsoft to Limit Onmicrosoft Domain Usage for Sending Emails

Microsoft has announced significant restrictions on email sending capabilities for organizations using default onmicrosoft.com domains, implementing a throttling system that limits external email delivery to 100 recipients per organization every 24 hours.  The policy change, announced through the Exchange Team…

New HTTP Smuggling Attack Technique Let Hackers Inject Malicious Requests

A sophisticated HTTP request smuggling attack that exploits inconsistent parsing behaviors between front-end proxy servers and back-end application servers.  This newly discovered technique leverages malformed chunked transfer encoding extensions to bypass established security controls and inject unauthorized secondary requests into…