Why You Need a Cyber Security Room: 5 Rules for Evidence Integrity
Connecting a seized phone to a network even once can destroy the evidence. The basic rules for protecting evidence integrity.
3 min readOctober 14, 2026
Phones Now Talk Without a Network
Some of the latest smartphones can send short messages and report their location directly via satellite when there's no cellular network. The feature was designed for emergencies, but from a forensic standpoint it's a new communication path.
Satellite links operate at different frequencies and with a different signal structure from the mobile network. Older isolation solutions that focus only on mobile bands may not close this path.
Why Does It Matter?
A seized device reporting its location or receiving a message is a serious problem for evidence integrity. The owner sending a remote command can open the examination's reliability to challenge in court.
That's why every communication channel a device could use must be listed: mobile networks from 2G to 5G, Wi-Fi, Bluetooth, UWB, GPS and now satellite bands. All of these also came up when we explained why airplane mode isn't enough.
What Changes in Room Design?
A properly designed shielded room blocks all these channels together, because shielding is designed for a wide range rather than a single frequency. However, the room's handover measurement must also cover satellite bands.
A check measurement on existing rooms shows whether there is enough attenuation at satellite frequencies. If it falls short, it's usually solved with improvements to door gaskets and penetration details.
Recommendations for the Lab
The basic rule is to carry devices from the field in shielded boxes, take them straight into a cyber security room at the lab and not bring them out until the examination is finished.
When preparing your technical specification, we recommend adding satellite bands to the frequency range. In our digital forensics solutions we measure this scope as standard.
Frequently Asked Questions
Isn't satellite signal already weak indoors?
Usually, yes, but a link may be possible near windows or on upper floors. Evidence security must rely on certainty, not probability.
Does a Faraday bag block satellite signals?
Good bags do, but performance drops as the bag wears or if the flap isn't fully closed. Long examinations need a shielded room.
Do you measure existing rooms in satellite bands?
Yes. We report the room's attenuation in these bands with a check measurement.
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