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You've essentially rattled off the US Government SCIF specifications (which are public and a fascinating read). Also non-conductive ductwork and plumbing at th
by superuser2 10y ago
You've essentially rattled off the US Government SCIF specifications (which are public and a fascinating read).
Also non-conductive ductwork and plumbing at the edges of the SCIF and careful selection/programming of the phone system to make sure an attacker can't remotely set a phone off hook and use it as a microphone.
- angry_octet 10y agoMostly right. SCIF phones are always press to talk with speakerphone disabled. Typically they are very simple POTS phones, with high roll-off lowpass filters where they exit. Having a smart PABX which can transparently route cell calls to internal numbers is very important to making SCIFs functional. It was interesting to read that Hillary Clinton had problems at State because her staff couldn't access their phones in the office - primarily SMS or BBM I think.