Network Access Control (NAC): Enforces security policies on devices before they are permitted to connect to the network, ensuring endpoints meet security requirements.
Anomaly Detection: AI and machine learning tools establish baselines of normal network behavior and detect deviations that may indicate malware infections, data exfiltration, or compromised accounts.
Zero Trust Network Access (ZTNA): Replaces implicit trust in network location with continuous verification of user identity, device health, and access permissions for every connection attempt.
Pangratis works alongside network security controls to protect the email vector, one of the most common pathways attackers use to bypass network defenses through targeted phishing and social engineering attacks.
Network Segmentation
Network Segmentation
Network segmentation divides enterprise networks into isolated zones with controlled boundaries, preventing lateral movement during breaches and containing threats to minimize damage across the organization's infrastructure.
By breaking a flat network into multiple smaller, isolated segments, organizations ensure that a compromise in one area cannot automatically spread to all connected systems. This fundamental security principle limits the blast radius of successful attacks and forces threat actors to work harder and be more visible as they attempt to move between segments.
How Network Segmentation Works
Network segmentation creates security boundaries between network zones through a combination of technical controls including firewalls, routers with access control lists, VLANs (Virtual Local Area Networks), and software-defined networking policies. Traffic between segments is controlled, logged, and inspected based on defined security policies.
Types of Network Segmentation
Physical Segmentation: Uses separate physical network infrastructure—distinct cables, switches, and routers—to create completely isolated network environments. Provides the strongest isolation but is expensive and inflexible.
Logical Segmentation (VLANs): Uses virtual local area networks to partition network traffic at the data link layer without requiring separate physical infrastructure. VLANs allow organizations to group devices logically regardless of physical location.
Macro-Segmentation: Divides the network into large zones (such as corporate, guest, and industrial control system networks) using firewalls and other boundary controls. Appropriate for separating fundamentally different trust levels.
Micro-Segmentation: Uses software-defined networking to create granular isolation at the individual workload or application level. Micro-segmentation applies least-privilege network policies to east-west traffic (between systems within the same network zone), providing significantly more precise control than traditional segmentation. It is particularly valuable in cloud and virtualized environments.
Identity-Based Segmentation: Governs network access based on verified user or device identity rather than network location, ensuring access policies follow users across different network zones.
Security Benefits
Lateral Movement Prevention: Segmentation is one of the most effective controls for limiting lateral movement. When an attacker compromises one system, they cannot automatically access systems in other segments, forcing them to traverse monitored security boundaries.
Breach Containment: Limiting connectivity between segments means that ransomware, worms, or other spreading malware cannot propagate freely through the environment, containing damage to the initially affected segment.
Compliance Support: Many regulatory frameworks including PCI DSS require network segmentation to isolate sensitive data environments such as cardholder data from other systems.
Performance Optimization: Segmentation reduces unnecessary broadcast traffic and network congestion, improving performance for critical systems.