The Electronic Frontier Foundation (EFF) highlights growing concerns associated with Street Level Surveillance technologies, particularly Cell-Site Simulators (CSS), which are used by law enforcement to track mobile devices. CSS trick phones into connecting by mimicking legitimate cell towers, allowing for precise tracking and logging of personal identifiers without involving telecom companies. The EFF introduces an open-source tool designed to empower citizens to discover and understand the deployment of these devices, a critical step given the limited transparency around their capabilities and use, especially in protests and sensitive communications.
CSS, also known as Stingrays or IMSI catchers, masquerade as legitimate cell-phone towers, tricking phones into connecting while conducting broad searches for communications.
What makes CSS compelling compared to other surveillance technologies is the lack of comprehensive knowledge regarding their capabilities, deployment, and implications for civil liberties.
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