Vulnerabilities
Cisco IOS XE Vulnerabilities: Risks and Protection for Small Businesses
Small networks face disproportionate risk from Cisco IOS XE flaws because default configurations often expose management interfaces to the public internet.
network security
Everything Circuit Observer has reported about network security: 7 stories, newest first. Part of our Tech News coverage.
Cyber Attacks
What Is Replay Attacks: How Recordings Compromise Your Systems
Replay attacks bypass encryption by reusing valid data, forcing you to defend against valid credentials rather than stolen secrets.
Tech News
List of Ports and Protocols: How to Map and Secure Your Network
Open ports act as permanent invitations for attackers, turning your internal network into a public target before your firewall rules even load.
Tech News
OSI Model Acronym: What Each Layer Does for Your Network Security
The OSI model acronym hides a critical truth: most security tools only inspect traffic at layer 3 or 4, leaving encrypted application data at layer 7 completely invisible to standard defenses.
Cyber Attacks
Detect Eavesdropping: Log Signals and Network Anomalies
Passive interception often leaves no direct trace, forcing defenders to hunt for indirect signals like unexpected certificate validation failures or anomalous traffic volume spikes.
Malware & Ransomware
Command and Control Servers: How They Bypass Network Defenses
Most command and control traffic masquerades as normal web browsing, making it nearly impossible to stop by blocking specific IP addresses alone.
Malware & Ransomware
Virus vs Worm: The Structural Difference That Dictates Spread
Understanding whether a threat requires human action to move reveals how to isolate the breach before it consumes the network.