All news with #5g downgrade tag

SNI5GECT: 5G Downgrade Attack Enables 4G Tracking Now

🔒 Researchers demonstrated SNI5GECT, an over‑the‑air injection attack targeting unencrypted initial exchanges in 5G that can crash device modems or force a fallback to 4G. By observing the plain‑text handshake and injecting a crafted information block at precise timing, an attacker within roughly 20 meters can trigger a reboot or downgrade. The technique enabled 4G‑based tracking and spoofing on multiple handsets across different modem vendors, and arises from protocol characteristics rather than a single vendor implementation.