The FBI, Secret Service and Florida law enforcement are searching for one or more suspects they say tried to change the make-up of a local town’s w
The FBI, Secret Service and Florida law enforcement are searching for one or more suspects they say tried to change the make-up of a local town’s water in a failed attempt to add a potentially caustic chemical by remotely accessing the computer system at a treatment plant that services the entire city, officials said.
A plant operator at the Oldsmar water treatment facility thwarted a hacker’s attempt to elevate the amount of sodium hydroxide in the water to “dangerous levels” on Friday afternoon, Pinellas County Sheriff Bob Gualtieri said during a Monday news conference. Federal partners have since joined forces in probing the case.
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The FBI and Pinellas County Sheriff’s Office had no updates in the case as of Tuesday morning.
“Right now, we do not have a suspect identified but we do have leads that we’re following,” Gualtieri said Monday. “We don’t know right now whether the breach originated from within the United States or outside the country. We also do not know why the Oldsmar system was targeted and we have no knowledge of any other systems being unlawfully accessed.”
Oldsmar is approximately 15 miles from Tampa and is home to just under 15,000 people.
The hacker first breached the system at approximately 8 a.m. Friday, but only did so momentarily before logging off. A plant operator on duty noticed the “brief” remote access, but wasn’t particularly concerned because supervisors “regularly” access the computers remotely to monitor the system, officials said.
But around 1:30 p.m. that same day, “someone again remotely accessed the computer system, and it showed up on the operator’s screen with a mouse being moved about to open various software functions that control the water being treated,” Gualtieri said.
The hacker took over the system for anywhere from three to five minutes, he said. They opened a function that controls the amount of sodium hydroxide in the water – changing the amount from 100 parts-per-million to 11,100 parts-per-millions, Gualtieri said.
“This is obviously a significant and potentially dangerous increase. Sodium hydroxide, also known as lye, is the main ingredient in liquid drain cleaners,” he continued. “It’s also used to control water acidity and remove metals from drinking water in the water treatment plants.”
The hacker left the system shortly after changing the parts-per-million, and officials say the plant operator “immediately reduced the level back to the appropriate amount.”
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The treatment plant provides water directly to Oldsmar’s businesses and residences, officials said, but the affected water would not have made its way to the Oldsmar public until 24 to 36 hours later and was checked multiple times before it did. Oldsmar’s water system is no longer capable to being accessed remotely, Gualtieri said. The public was never in danger.
Sodium hydroxide is often used to manage acid levels in water, and can cause burns or irritation, among other adverse reactions when it reaches a certain level.
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Following Monday’s announcement, U.S. Senator Marco Rubio said he would ask the FBI “to provide all assistance necessary.”
He added: “This should be treated as a matter of national security.”