https://tcsltesting.blogspot.com/2018/08/three-lenovo-rootkit-versions.html
From Thompson Cyber Security Labs: https://armor.ai/
Manufacturers analyzed: {‘Toshiba’, ‘Acer’, ‘Lenovo’, ‘Asrock’, ‘Desenvolvida por Positivo Informatica SA’, ‘Razer’, ‘Clevo’, ‘American Megatrends Inc./Advantech’, ‘American Megatrends Inc.’, ‘LG Electronics’, ‘Dell’, ‘ASUSTeK’, ‘Gygabyte’, ‘Intel’, ‘Sony’, ‘Hewlett-Packard’, ‘Apple Inc.’}
Total firmware analyzed: 550
Total firmware with portable executables analyzed: 515
Total portable executables analyzed: 131289
Total portable executables triggering one heuristic: 20964
Total portable executables triggering more than one heuristic: 3178
Average portable executables per ROM: 254
Average portable executables triggering heuristic per ROM: 40
Average portable executables triggering more than one heuristic per ROM: 6
Firmware Security 