◈ Baltic Sonar — Daily Intelligence Brief, 2026-10-23

**BALTIC SECURITY INTELLIGENCE BRIEF** **Date:** 2026-10-23 **Overall Index:** 45/100 (YELLOW) **Overall Assessment** The Baltic security environment remains elevated but stable. The primary driver of the YELLOW status is widespread GNSS electronic warfare (EW) activity and a critical infrastructure routing anomaly. No immediate kinetic threat is identified, but hybrid pressure persists. **Notable Developments** Significant GNSS degradation has been recorded across multiple coordinates, including (54.2, 22.4), (56.2, 20.5), (55.8, 22.5), (59.8, 26.0), (55.5, 22.6), (54.5, 20.5), and (54.9, 20.4). These disruptions likely impact navigation-dependent systems in maritime and aviation sectors. Concurrently, a BGP routing anomaly involving the Estonian Internet Foundation (.ee) was detected, raising concerns regarding digital infrastructure resilience. **Correlated Clusters** Data indicates strong correlations between Critical Infrastructure and Cyber threats in Lithuania and Latvia. Estonia shows links between Critical Infrastructure and Diplomatic/Weather factors. A multi-state cluster links Naval operations, GNSS EW, and Diplomatic activities. Note: Correlation does not imply causation; these may reflect parallel hybrid operations rather than a single coordinated attack. **Narratives Present** Recent discourse is dominated by Diplomatic Pressure & Peace Talks (18 items), Military Reinforcement & Exercises (14 items), and Russian Hybrid Threats & Sabotage (13 items). NATO Strategic Support & Ukraine remains a secondary focus (8 items). **Monitoring Priorities** 1. **GNSS Integrity:** Monitor for sustained degradation affecting maritime/aviation safety. 2. **Digital Infrastructure:** Track .ee routing stability and potential cyber intrusions. 3. **Hybrid Operations:** Assess if GNSS EW correlates with physical sabotage attempts. *ASSESSMENT: The combination of GNSS EW and BGP anomalies suggests a coordinated hybrid pressure campaign targeting both physical navigation and digital connectivity.*