Localization of network security ushered in the theme of investment opportunities: May 12, called a WannaCry (Eternal Blue) computer blackmail virus is spreading in the world, 99 countries infected by the virus. Information security sector so far down 17.73%, higher than the computer industry -15.53% decline. From the industry point of view, it is recommended to focus on information security services manufacturers such as Blue Shield shares (with education and oil and petrochemical industry customers), North source (information security management), Guardian (information security operation and maintenance), concerned about the stars, And other offensive and defensive technology excellent network security service providers, concerned about the localization of the core of the chip in the dawn of light, domestic middleware manufacturers Oriental pass, Li Si Chen, the domestic operating system of the Chinese standard software, independent control of the core business of China Great Wall.