A mass cyber attack is suspected to have caused a 911 outage that hit four states across the country, leaving millions without emergency assistance.
Cities as big as Las Vegas, as well as the entire state of South Dakota and locales in Texas and Nebraska announced the outages on Wednesday night.
The Department of Homeland Security (DHS) has warned of increased risks of cyber attacks on 911 services as they have migrated to digital systems.
In analysis compiled by the agency and published by ABC News just hours before the outages, they outlined concerns of how emergency services can be exploited for sensitive data.
The bulletin said that ransomware attacks have ‘disrupted the networks of police department and 911 call center operations’.
The bulletin added: ‘Cybercriminal exploitation of data stolen during ransomware attacks against the Emergency Service Sector (ESS) likely poses a persistent criminal threat due to the exposure and availability of victims’ personal information.’
The DHS said that once stolen, potentially sensitive personal information including police records could be leaked, sold or used to facilitate other crimes like extortion or identity theft.
‘Additionally, you have to have a lot of resources devoted to addressing it. And it can also prevent us from doing investigations.’
Officials in South Dakota, Nevada and Las Vegas said 911 services had been restored, but have yet to identify the official cause of the failure.
In Las Vegas specifically, no estimate was initially given after an outage wiped out landline and mobile phones connectivity to the crucial 911 number.
Authorities asked for callers not to test out the phone line while they try and get service back up, amid fears that unreported crimes may be taking place.
Nearby Henderson, Nevada was also facing a down 911 – but various other emergency services were still running.
The entire state of South Dakota, Dundy County, Kearney County, Howard County and Fremont, Nebraska, as well as Del Rio, Texas were also affected.



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