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Researcher: National Emergency Alert System is Easy To Exploit_我的网站

一 | 昨天下午，西湖白堤，被风吹坏的雨伞装满一辆环卫车。 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.。台风登陆前后，杭州风雨交加。据杭州市气象台统计，8月8日8点至9日18 点全市面雨量78毫米，主城区面雨量101毫米，最大富阳126毫米，萧山120毫米、滨江113毫米、西湖110毫米、余杭106毫米、上城96毫米、临安96毫米、桐庐94毫米、钱塘88毫米、拱墅84毫米、临平71毫米、建德47毫米、淳安36毫米，1511个站点累计降水超过50毫米（占比73.3%）、731个站点累计降水超过100毫米（占比35.4%），2个站点累计降水超过250毫米，最大累计雨量临安天目山镇东关村321.8毫米，最大小时雨强萧山区进化镇祝家村54.1毫米。昨天下午，记者在西湖边看到，不少游客还在风雨中游玩。14点，断桥和白堤上，景区保安一边巡逻劝导，一边用扩音喇叭提醒游客，远离湖边、树下和堤岸周边，建议尽快返程。白堤上风大雨急，游客们只能顶风冒雨前行，一些人手中的雨伞被风吹得变形。记者看到，一辆环卫三轮车上，放着一堆从垃圾箱和路边清理收集来的雨伞，装满整整一车，几乎都是被风吹坏后丢弃的。

二 | 环卫工人说，光白堤这段路，一天就能清理上百把。

三 | 16点，西湖景区对白堤、苏堤区域实施临时管控。断桥入口设置了围栏，禁止游客进入，景区民警也劝离还在白堤上的游客。台风来势凶猛，西湖景区各部门闻风而动，随时出击，应对各种突发险情。昨天15点半，白堤一株柳树的一段枝干被风吹断，景区园林工人随即赶到，迅速处置完毕。

四 | 16点多，记者途经西湖边北山街时，看到新新饭店公交站附近，一棵10多米高的悬铃木发生倒伏，拦在马路中间，对交通造成影响。交警部门随即对北山街实施临时交通管控，禁止车辆和行人通行。相关部门和园林工人迅速赶到现场，分段砍伐、逐节清理，并用吊车将粗壮树干移至路边，留出通道，北山街随后恢复畅通。西湖景区提醒游客，台风影响期间，避免前往山地易涝路段，勿在古树、广告牌、临水平台逗留，合理安排行程，尽量减少外出，注意自身安全防护。

五 |

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