Get Permission Following the hacking of a Florida water treatment plant, the Cybersecurity and Infrastructure Security Agency is warning the operators of other plants to be on the lookout for hackers who exploit remote access software and outdated operating systems - and to take risk mitigation steps. But the advice applies to other organizations as well, some security experts say. The investigation into the breach of the water treatment facility in Oldsmar, Florida, continues. Local officials say a hacker gained remote access to a system to increase the amount of lye in the city's water system, but the hack was immediately thwarted. The plant's employees reportedly used TeamViewer for remote access (see: