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

一 |     城市温情，藏于街巷日常；善意风尚，贵在润物无声。近日，公益福彩公交车体广告亮相甘肃武威街头，穿梭在凉州大地，将温润向善的福彩文化融入城市脉络，化作流动的城市文明风景线，让公益善意悄然浸润街头巷尾、千家万户。依托公交全域穿行、覆盖广泛的独特优势，公交车体广告在传播“公益、慈善、健康、快乐、创新”福彩文化的同时，也让广大市民进一步了解福彩、关注福彩，以流动载体承载公益初心，凝聚社会向善力量。微小善意，可聚满城温度；寻常坚守，方显公益初心。

二 | 此次车体广告投放，是武威福彩拓宽宣传渠道、丰富传播维度的一次实践探索。近年来，武威市福彩中心立足城市特色、贴近群众生活，持续搭建全方位公益宣传格局：线上构建电视、广播、新媒体全方位立体化全媒体传播矩阵；线下依托交通载体、户外电子显示屏、商圈点位、乡镇宣传栏协同发力，精心打造天马湖沿岸围栏公益长廊，将福彩理念与滨湖风光相融，在人流密集广场设置遮阳休息座椅等，形成线上线下联动、静态动态互补的完整传播链条，让福彩善意融入城市每一处角落。    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.。

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