Device security · satellite fallback

Security alerts over satellite

nRF9151 · Exein Runtime Security Monitor · Skylo GEO NB-IoT NTN

connecting...

Waiting for the first report

An incident raised by the Exein runtime on the device is sent here over the satellite.

Reports via satellite

since the receiver started

Sent after detection

–

last report, measured on the device

Satellite registration

–

last report, from the switch to NTN

Signal (RSRP)

–

GEO: about −120 dBm is good

Satellite data, this month

IP + UDP bytes up and down, of the SIM's 50 KB

Reports received

Received	Link	Incidents	After detection	Registration	RSRP	Size

How it works

1The Exein runtime on the nRF9151 detects an incident (heap exhaustion, stack overflow risk, memory leak) and reports it to the Exein platform over LTE-M.

2DOTS firmware on the same device receives the same alert from the runtime and, when LTE is unavailable or for this demo, switches the modem to Skylo's GEO satellite network (NB-IoT NTN).

3It sends one small UDP packet (incident type, severity, sequence, time since detection, position) to this server by IP address, waits for the acknowledgement, and returns to LTE-M.

4A GEO round trip takes about 9 seconds, so the report is a single message with no TLS handshake or DNS lookup.