Kusan shekara guda bayan fitowar farko, Microsoft a hankali ya fitar da sigar ta biyu. Ya shiga matakin samfoti na fasaha a ranar 19 ga Yuli, 2010, kuma an saki ginin karshe a ranar 16 ga Disamba, 2010. Ya haɗa da Tsarin Binciken Sadarwa (NIS), tsarin gano kutse na hanyar sadarwa wanda ke aiki a kan Windows Vista da Windows 7, da kuma sabon injin anti-malware wanda ke amfani da heuristics a cikin gano malware.
Windows Vista da Windows 7