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网速慢?您的网络路由器可能正在泄漏数据

一旦xLED恶意软件感染网络设备，它就会完全控制闪烁指示状态的led。

  • PTI
  • 2017年6月7日09:42 IST
路由器和局域网交换机等网络设备通常包括用于监控流量活动、警报和提供状态的活动和状态led。
路由器和局域网交换机等网络设备通常包括用于监控流量活动、警报和提供状态的活动和状态led。
耶路撒冷:科学家首次证明，秘密窃取任何人的敏感文件、密码或其他关键数据是可能的常见的路由器．

以色列内盖夫本-古里安大学(BGU)的研究人员演示了发光二极管(led)的功能如何被他们开发的恶意软件(代号“xLED”)无声地覆盖，从而感染设备中的固件。

一旦xl恶意软件感染网络设备，它就能完全控制闪烁显示状态的led。

网络设备例如路由器和局域网交换机通常包括活动和状态led，用于监控流量活动、警报和提供状态。

BGU研发负责人Mordechai Guri表示:“敏感数据可以通过LED光脉冲以各种方式进行编码和发送。网络安全研究中心(中国证监会）.

古里说:“攻击者可以使用远程或本地摄像头，或者隐藏在房间里的光传感器，可以记录LED的活动并解码信号。”

古里说:“与受到防火墙严密监视和控制的网络流量不同，这个隐蔽通道目前没有受到监控。”

他说:“因此，它使攻击者能够在避开防火墙、气隙(未连接到互联网的计算机)和其他数据泄露预防方法的同时泄露数据。”

xLED恶意软件可以编程LED以非常快的速度闪烁——每个LED每秒闪烁超过1000次。

由于典型的路由器或网络交换机包括六个或更多的状态led，传输速率可以显著增加到每秒数千位。

因此，大量高度敏感的信息可以通过快速LED信号进行编码和泄漏，这些信号可以由远程摄像机或光传感器接收和记录。

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科技和小玩意
\"
Network devices such as routers and local area network switches typically include activity and status LEDs used to monitor traffic activity, alerts and provide status.<\/span><\/figcaption><\/figure>JERUSALEM: Scientists have for the first time demonstrated that it is possible to covertly siphon sensitive files, passwords or other critical data from any common router<\/a>.

Researchers at the Ben-Gurion University of the Negev (BGU) in Israel demonstrated how functionality light-emitting diodes (LEDs) can be silently overridden by malware they developed (code named \"xLED\"), which infects firmware in the device.

Once the xLED malware<\/a> infects the network device, it gains full control of the LEDs that flash to indicate status.

<\/div><\/div>Network devices<\/a> such as routers and local area network switches typically include activity and status LEDs used to monitor traffic activity, alerts and provide status.

\"Sensitive data can be encoded and sent via the LED light pulses in various ways,\" said Mordechai Guri, head of research and development at the BGU Cyber Security<\/a> Research Center (CSRC<\/a>).

\"An attacker with access to a remote or local camera, or with a light sensor hidden in the room, can record the LED's activity and decode the signals,\" said Guri.

\"Unlike network traffic that is heavily monitored and controlled by firewalls, this covert channel is currently not monitored,\" said Guri.

\"As a result, it enables attackers to leak data while evading firewalls, air-gaps (computers not hooked up to the internet) and other data-leakage prevention methods,\" he said.

The xLED malware can programme the LEDs to flash at very fast speeds - more than 1,000 flickers per second for each LED.

Since a typical router or network switch includes six or more status LEDs, the transmission rate can be multiplied significantly to as much as thousands of bits per second.

As a result, a significant amount of highly sensitive information can be encoded and leaked over the fast LED signals, which can be received and recorded by a remote camera or light sensor. <\/div><\/div>
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