路透社最近的一份报告显示,亚马逊正在剥离其语音助手Alexa,Alexa可以监听和响应语音命令。 该公司决定不更新助理的语言技能,这意味着黑客可能能够将其用于他们的恶意目的。

新版本的亚历克萨

正值假日购物旺季,亚马逊推出了新版本的Alexa语音助手。 最大的变化是 Alexa 现在需要输入一个 PIN,然后才能进行任何交互。 这是针对最近黑客只要让Alexa播放音乐或提出其他要求就可以访问用户机器的报道而做出的反应。

虽然这看起来只是一个小小的改变,但是它对于保护用户免受与 Alexa 不需要的交互作用有很大的帮助。 例如,如果你正在使用语音助手订购食物,必须输入密码才能阻止某人未经你的允许就点一些不该点的东西。

总的来说,这是使 Alexa 更安全并防止未经授权的访问的另一个步骤。

新版本的反弹

亚马逊在2018年初推出全新Alexa语音服务后,很多人好奇该服务在黑客面前是多么脆弱。 现在,网络安全公司FireEye发布的一份新报告显示,Alexa确实比我们想象的更容易受到黑客攻击。

根据报告,新的Alexa语音服务实际上比前一个版本”安全性大大降低”。 也就是说,黑客可以轻易地利用系统的弱点,访问账户密码、信用卡号码等用户的个人信息。

FireEye说,这些漏洞可能被网络犯罪分子利用,以获取人们的家园和企业。 实际上,亚马逊认为,这可能成为2019年亚马逊Alexa平台的最大威胁之一。

虽然亚马逊已经开始着手解决其中一些问题,但是很明显,如果我们想让Alexa变得真正安全,还需要做更多的工作。 在此之前,每个使用此服务的用户都应该采取预防措施,比如永远不要泄露他们的登录凭据,或者为他们访问的每个站点使用唯一的密码。

有什么影响?

Alexa,Amazon Echo和其他设备内置的语音激活助手,只是安全性稍差一些。 新的漏洞允许黑客远程访问回声扬声器并控制其音频和视觉输出。 漏洞是由谷歌零项目安全研究员塔维斯·奥曼迪发现的。

Ormandy发现,Echo设备可以通过一个特别制作的音频文件被利用,该文件导致设备进入监听模式,即使它本不该进入监听模式。 一旦进入监听模式,攻击者可以使用语音命令向 Echo 设备发送任意代码,然后可以使用运行扬声器的用户的特权执行该代码。 这种恶意利用可以用来接管回声扬声器,甚至劫持它的麦克风和摄像机进行恶意利用。

这种漏洞非常严重,因为它可能允许任何有恶意音频文件的人控制回声设备,监视那些私下说话或问Alexa问题的用户。 这种攻击也可能被用来对其他支持Alexa的设备(如智能家居设备或智能汽车)的用户发动更多的攻击。

好消息是亚马逊已经发布了针对这一漏洞的补丁,所有Echo用户都应该尽快安装。 另外,亚马逊表示,将通过亚马逊网络服务(AWS)对通过互联网传送的所有用户数据进行加密,以防止攻击者从用户的回声扬声器中窃取任何个人信息。

四. 结论

就在几天前,亚马逊宣布他们已经修复了Echo扬声器的一个问题,允许黑客绕过它的安全和控制设备。 就在几个月前,有报道称黑客能够利用类似的漏洞夺取数百万台设备。 鉴于这些最近的事件,我们所有人都必须意识到网络犯罪的危险,并确保我们正在采取必要的预防措施来保护我们的个人信息。

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