Sodium hydroxide, also known as lye, is the main ingredient in liquid drain cleaners and is used to control water acidity and remove metals from drinking water at treatment plants. Police say an attempt to contaminate a Florida city's water supply with sodium hydroxide has failed despite a hacker gaining remote access to the local water treatment plant's computer system. Pinellas County Sheriff Bob Gualtieri said during a news conference on Monday that a plant worker at the city of Oldsmar's water treatment facility first noticed unusual activity with its computer system at 8 a.m. on Friday, when a hacker...