The End Of Network Guesswork: Cellular Control Made Simple
Zscaler, Thursday, June 19th, 2025
Most organizations assume that once a device connects to a cellular network, it's automatically under control. In reality, that assumption is rarely true. When a SIM card is active and connected, its traffic flows freely across networks and borders with little visibility or control.
The result is an illusion of security that leaves organizations exposed to risks and policy violations, especially when they need to enforce compliance based on geography or behaviour.
As I outlined in my previous blog, telcos provide a certain layer of control at the network-level, but granular control related to an organization's specific security policies is often missing from their offering.
As a result, most organizations still tend to rely on legacy architectures such as firewalls, VPNs, and backhaul networks to try and fill the gap. Not only do these add complexity and cost, but they often fail to deliver the proactive, zero trust control that today's cellular environments demand. Once connected, devices are allowed to communicate too freely, violating zero trust principles that require strict verification of every interaction.