Femtocell Security Risks: Why Legacy Devices Are Still a Threat

Femtocells are low-power cellular base stations used in homes and small offices to improve indoor mobile coverage. They connect to the operator’s core network over broadband and broadcast a local cellular signal, typically covering 10 to 50 metres. They operate within standard mobile infrastructure, using licensed spectrum such as: • 3G UMTS bands (Band 1 2100 MHz in the UK) • Some later units support LTE bands depending on deployment Unlike signal boosters, femtocells do not amplify an existing