Pinellas County Sheriff Bob Gualtieri said at a news conference Monday there were two intrusions, hours apart.
The first one happened at 8 a.m., when a plant operator noticed someone remotely accessing the system he was monitoring, which controls chemicals and other plant operations. But he didn’t think much of it, according to the sheriff, because it was brief and his supervisors and others remotely access the system to troubleshoot problems.
Then, at around 1:30 p.m., there was another, longer intrusion – about five minutes.
According to the sheriff, the operator saw the mouse moving around as the hacker opened various software control functions.