However, HP Threat Researchers now warn that the growing use of multiple, often uncommon, binaries in a single campaign is making it even harder to distinguish malicious versus legitimate activity. Attackers Hiding Malware in Pixel Image Files: Attackers used Microsoft Compiled HTML Help files to hide malicious code within image pixels. Alex Holland, Principal Threat Researcher, HP Security Lab, comments: “Attackers aren’t reinventing the wheel, but they are refining their techniques. By hiding malicious code in images, abusing trusted system tools, and even tailoring attacks to specific regions, they’re making it harder for traditional detection tools to spot threats. Dr. Ian Pratt, Global Head of Security for Personal Systems at HP Inc., comments: “Living off the land techniques are notoriously difficult for security teams because it’s hard to tell green flags from red – i.e.