back at home in the north of the city, he scrutinized its code. He was struck by the layers of obfuscation; the malware had evaded all antivirus scans. It had even impersonated an antivirus scanner itself, Microsoft’s Windows Defender. After his family had gone to sleep, Yasinsky printed the code and laid the papers across his kitchen table and floor, crossing out lines of camouflaging characters and highlighting commands to see the malware’s true form.
