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Researcher: National Emergency Alert System is Easy To Exploit_我的网站
A | The Department of Homeland Security is telling state and local governments to update software and beef up security around devices connected to the nationwide Emergency Alert System (EAS). The recommendation comes days after security researcher Ken Pyle revealed vulnerabilities in devices used by officials to encode EAS alerts.,Pyle told KerbsOnSecurity that he first discovered the vulnerabilities in 2019 after buying old EAS equipment on eBay. He quickly found the vulnerabilities and alerted the FBI, DHS, and the manufacturer of the devices. Pyle decided to give the manufacturer and government time to address the issue before going public.,DHS Inspector General Overseeing Jan.6 Secret Service Probe Previously Misled Investigators: Report4 August, 12:27 GMT,He started to worry after the Jan 6, 2021 riot at the US Capitol, fearing that the vulnerabilities could be used “to start a civil war.”,That is because despite a patch being issued in 2019, many of the devices have not been updated either because they are too old for the new firmware or because of simple neglect by the operators. Pyle also says that many operators do not perform basic security measures recommended by the manufacturer, like changing the default password and putting the devices behind a firewall.,This is a problem because of the way EAS messages are distributed. There is no central authority and the process is automated in most cases. This means that someone could issue an alert locally and as long as it is accepted as a real EAS alert, it could spread nationwide.,“These devices are designed such that someone locally can issue an alert, but there’s no central control over whether I am the one person who can send or whatever,” Pyle told KerbsOnSecurity. “If you are a local operator, you can send out nationwide alerts. That’s how easy it is to do this.”,One device obtained by Pyle was a non-functional EAS device, purchased from an electronics recycling company. While the device no longer operated, the person who discarded it and the recycling company neglected to wipe the hard drive, giving Pyle access to cryptographic keys allowing him to broadcast messages on Comcast’s network, the third largest cable company in the US.,Comcast told KerbsOnSecurity in a statement that the EAS was lost by a third-party shipper and that the keys and credentials found on the device will no longer work on their system. They also thanked Pyle for his research and for informing them about the issue.,EAS vulnerabilities have been exploited in the past. In 2013, someone hacked the EAS networks in Great Falls, Montana, and Marquette, Michigan, using their access to issue an alert saying that zombies are rising from their graves. That same prank was repeated in Indiana in 2017. There have been other incidents, though they did not include zombies.。 IT之家 7 月 21 日消息，华为昨日面向部分机型推送了鸿蒙 HarmonyOS 6.1.0.135 新版本，进一步增强了图库 AI 修图中的沾色、魔法移图等功能，同时优化了部分场景的系统稳定性和使用体验。 ▲ IT之家开箱：华为 Mate 80 Pro Max 风驰版图赏 事实上，此次新版本更新日志并未完整呈现所有的新特性。IT之家在实测过程中发现，HarmonyOS 6.1.0.135 版本还有未公开的“隐藏”新特性： 默认图标优化，边缘新增光感特性 智慧生活 App 的耳机控制页面布局调整 支持对单应用音量调节（需手动开启开关后可用，路径：设置-声音和振动-应用音量单独调节） 修复设置-小艺-智能服务页面显示错位 Bug 华为 Mate X6 折叠屏手机新增支持内外屏设置不同壁纸 新增截屏直达服务 设置-钱包和支付新增独立设置选项 音悦家 App 支持华为 MatePad Edge 二合一平板电脑 优化设置首页顶部“云空间”和“查找设备”弹出动画 粒子光效增强 App 拖入大文件夹新增水波纹动画 目前，该版本仅面向 Mate 80、Mate X7、Pura X 等系列机型开启推送，Mate 60 系列、Pura 70 系列等预计将在下月开启推送。
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