{"as_of":"2026-05-21T22:26:28Z","honest_caveats":["Many internet shutdowns are SUDDEN and have no measurable technical precursor \u2014 this detector cannot warn on those.","IODA BGP data has a ~6h ingest lag, so a real lead time shorter than ~6h will not be observable here even if a precursor exists.","signal_up != shutdown imminent. The composite crossing the threshold reflects elevated BGP/TLS/ASN anomaly activity, which frequently resolves with no shutdown (see false_positive_rate)."],"n_returned":0,"n_total":178,"promoted":true,"schema":"voidly-pre-shutdown-signal/v1","signals":[],"threshold_z":1.5}