It starts with a ZIP file and ends with your credentials gone. The latest version of KoiLoader arrives via phishing email and delivers Koi Stealer to harvest data. A new Android trojan, TsarBot, targets over 750 apps across multiple platforms, using overlays and permissions abuse to steal sensitive info right from under users' thumbs. In other news, Operation HollowQuill is reading more than research papers. This espionage campaign is using booby-trapped PDFs to target Russian academic and defense networks, slipping in Cobalt Strike beacons under the guise of legitimate documents. Read on for more.