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翻译中 by小眼儿
Linux Is the Only Way to Protect Against Potential Sound-Transmitted Malware
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**A new type of malware that is using sound to transmit itself has been developed by scientists and it seems that the Linux systems are the only ones that can be protected against this kind of attacks.**
Scientists Michael Hanspach and Michael Goetz from Fraunhofer FKIE, Wachtberg, Germany, have developed a technique capable of infecting other computers with malware that transmits itself using just speakers and microphones.
“Covert channels can be used to circumvent system and network policies by establishing communications that have not been considered in the design of the computing system. We construct a covert channel between different computing systems that utilizes audio modulation/demodulation to exchange data between the computing systems over the air medium,” [reads the paper][1] that they published in the Journal of Communications.
This would prove a very powerful method of infecting computers, especially because they don't even have to be linked in a network. All that is needed for the method to work is proximity.
Another problem is that there is virtually no protection embedded in today's operating systems for such malware. The good news is that Linux users can make a few small modifications in order to gain that much needed protection.
The developers have explained that Linux systems can be programed, rather easily, to adapt to this new form of attacks.
“If audio input and output devices cannot be switched off, implementation of audio filtering options may be an alternative approach to counter maliciously triggered participation in covert networks. “
“In Linux-based operating systems, a software-defined audio filter can be implemented with ALSA (Advanced Linux Sound Architecture) in conjunction with the LADSPA (Linux Audio Developer’s Simple Plugin API),” the scientists say in the paper.
Sound-transmitted malware is something very new and it's no wonder that there is no protection against it, but it goes to show why Linux systems are considered safer.
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译者：[译者ID](https://github.com/译者ID) 校对：[校对者ID](https://github.com/校对者ID)
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
[1]:http://www.jocm.us/index.php?m=content&c=index&a=show&catid=124&id=600

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Linux是抵御“声传恶意软件”的唯一方法
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**科学家已经开发出一种使用声音实现自我传播的新型恶意软件，貌似Linux是目前唯一能够抵御该类攻击的操作系统**
来自德国的科学家Michael Hanspach和Michael Goetz已经开发出了一种技术能够使得恶意软件只需通过麦克风和扬声器就能够将自己传播感染到其他计算机。
“只需要通过计算机系统中某些意想不到的方式建立通信连接，一些隐秘的渠道就能够绕过系统与网络的安全策略。我们在不同的计算机操作系统间构建了一种隐秘渠道，利用音频编码/解码，以空气为媒介，在计算机系统间进行数据交换。”两位科学家在《通讯日报（Journal of Communication）》上发表了他们的[论文][1]。
该方法验证了一种非常强大的感染计算机的方法，尤其是因为被感染的计算机甚至都不需要接入网络。该方法所需要的条件仅仅是“近距离”。
另一个问题是，事实上如今的操作系统还没有任何现成的防范手段能抵御这种攻击。好消息是，Linux用户可以通过一些小的修改就能获得所需的防护。
开发者介绍说Linux系统本身是可以任意编程调整的，相对来说，更容易改编适应这种新形式的攻击。
“如果音频输入输出设备无法关闭，音频过滤设置也许是一个替代办法，可以抵御恶意软件触发加入隐秘网络。”
科学家在论文中说道：“基于Linux的操作系统，音频过滤软件可以通过ALSA(Advanced Linux Sound Architecture 高级Linux音频架构)与LADSPA(Linux Audio Developer’s Simple Plugin API Linux音频开发者简易插件API)协同实现上述过滤功能。”
“声传恶意软件”是一种非常新的新鲜事物，无怪乎还没有针对它的防御办法，但是从另一个角度，这也反映出了为什么说Linux是更安全的操作系统。
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via: http://news.softpedia.com/news/Linux-Is-the-Only-Way-to-Protect-Against-Possible-Malware-Through-Sound-Attacks-405566.shtml
译者：[Mr小眼儿](https://blog.csdn.net/tinyeyeser) 校对：[校对者ID](https://github.com/校对者ID)
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
[1]:http://www.jocm.us/index.php?m=content&c=index&a=show&catid=124&id=600