#network-security

Cisco Patches Critical IOS Vulnerabilities in March 2026

Cisco released security patches for multiple high and medium-severity vulnerabilities affecting IOS software that could enable privilege escalation and secure boot bypass.

Ransomware Groups Target Network Backups in Systematic Attacks

Security researchers discovered ransomware operators systematically targeting network backup infrastructure to maximize attack impact and prevent recovery.

Ubiquiti Patches Critical UniFi Flaw Enabling Account Takeover

Ubiquiti fixed two UniFi Network Application vulnerabilities including a maximum-severity flaw allowing complete account hijacking attacks.

Windows Event ID 6272 – Microsoft-Windows-Security-Auditing: Network Policy Server Granted Access

Event ID 6272 indicates that Network Policy Server (NPS) has granted network access to a user or device after successful authentication and authorization through RADIUS protocols.

Windows Event ID 5157 – Windows Filtering Platform: Network Connection Blocked by Firewall

Event ID 5157 indicates Windows Filtering Platform blocked a network connection attempt. This security audit event helps administrators track blocked network traffic and firewall rule effectiveness.

Windows Event ID 5152 – Windows Filtering Platform: Network Packet Blocked by Firewall

Event ID 5152 indicates Windows Filtering Platform blocked a network packet. This security audit event helps track firewall activity and identify blocked connection attempts on Windows systems.

Windows Event ID 5024 – Windows Filtering Platform: Filter Engine Initialization Failed

Event ID 5024 indicates the Windows Filtering Platform (WFP) filter engine failed to initialize or encountered a critical error during startup, potentially affecting network security and firewall functionality.