FamousSparrow APT Group Targets Azerbaijani Energy Sector in Multi-Wave Espionage Campaign

The Chinese-linked advanced persistent threat (APT) group FamousSparrow conducted a multi-wave cyber espionage campaign targeting an Azerbaijani oil and gas company. The threat actor reused the same compromised entry point in three separate intrusions between December 2025 and February 2026. The attacks focused on the energy sector in Azerbaijan, with no additional technical details, malware names, or specific impacts disclosed in the report. The campaign demonstrates sustained persistence by the group to maintain access to the targeted organization. No CVE IDs or further indicators of compromise were mentioned.