如今,计算机应用在各个领域,于是计算机安全问题也日益引起人们的关注人们想尽一切办法,防范和阻击各类病毒的侵袭和黑客的攻击。安装防火墙,设置复杂的密码、口令,成为最有效和常用的办法。但是,窃密技术的新突破又让人头疼了原来,输入的内容可以通过敲击键盘的声音解读出来。 Nowadays, computers are used in various fields. Therefore, the issue of computer security is also increasingly attracting people’s attention. People are trying their best to prevent and block all types of viruses and hackers. Installing a firewall and setting up complex passwords and passwords are the most effective and commonly used methods. However, new breakthroughs in hacking technology are also a source of headaches. The input can be interpreted by typing the keyboard sound.