A mystery group of hackers seized control of a US town's water supply and began leaking dangerous chemicals in a frightening cyber attack.
Officials said they don't know who broke into the computer system but the poisoning was thwarted and only a 'minimal' amount of the harmful substance got in.
Pinellas County Sheriff said that hackers targeted the computer system of a facility that treats water for about 15,000 people near Tampa, Florida.
The cyber criminals sought to add a dangerous level of additive to the water supply on Friday by gaining remote access to a software programme called TeamViewer.
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