硬件加密的无线MCU对黑客变硬

　　硬件加密的无线MCU对黑客变硬

　　嵌入式设备总是容易受到攻击。近年来发生了变化的是黑客访问这些设备的能力。由于使用无线网络来互连网络，用于保护工业控制器和类似设备的网络中的空气间隙已经填满。无线网络被引入，增加了便利性和灵活性，但也为黑客发起攻击提供了一个简单的途径。所需的是对攻击进行加固的设备，使用技术相结合以支持高安全性。

　　安全加固的关键是一组基本的构建块，当一起使用时，拒绝黑客尝试并保持完整性。一个无线启用的设备需要确保它能够维护自己的代码和数据的控制，并支持与远程端点的私有通信，这些端点可以提供必要的认证以获得信任。

　　An example of why authentication of devices is essential is the man-in-the-middle attack. This is an attack in which a hacker intercepts communications between two legitimate devices and eavesdrops on the conversation， and alters the packets they receive in order to gain access to a secret or entry to one or both of the devices. A common attack used against Wi-Fi-enabled devices is to create an access point that masquerades as a legitimate router that forwards manipulated data to the real access point and to the device itself. Using such techniques， the attacker may learn the access codes needed to perform a successful login， or they may inject false data or malware that causes a device to become faulty.