Efficiency? Security? When the quest for one grants neither.

This weekly Threat Source bulletin highlights Cisco Talos research into the state‑sponsored Salt Typhoon campaign targeting U.S. telecommunications (using living‑off‑the‑land techniques), notifies readers of active exploitation of vulnerabilities in Palo Alto Networks, SonicWall, and OpenSSH, and publishes recent prevalent malware hashes and IoCs detected by Talos, with links to mitigations and further Talos guidance.