Several state-sponsored actors, hacktivist entities, and criminal groups from China, Iran, North Korea, and Russia have trained their sights on the defense industrial base (DIB) sector, according to findings from Google Threat Intelligence Group (GTIG). The tech giant's threat intelligence division said the adversarial targeting of the sector is centered around four key themes: striking defense entities deploying technologies on the battlefield in the Russia-Ukraine War, directly approaching employees and exploitation of the hiring process by North Korean and Iranian actors, use of edge devices and appliances as initial access pathways for China-nexus groups, and supply chain risk stemming from the breach of the manufacturing sector. "Many of the chief state-sponsors of cyber espionage…