Yeah, I would think pH adjustment would be a semi real time PID type of control.
From: Jaime Solorza Sent: Tuesday, February 9, 2021 12:09 PM To: AnimalFarm Microwave Users Group Subject: Re: [AFMUG] Wow We install all kinds of sensors at water and wastewater treatment plants to detect, monitor and manage these issues. On Tue, Feb 9, 2021, 11:55 AM Chuck McCown via AF <[email protected]> wrote: The dosage went to the equivalent of 11 grams per liter. I don’t think that would kill you. You might not even taste it. I would expect it to be bitter. The ld50 is 2 grams per kg. So 200 grams to kill me half way. That is a lot of sodium hydroxide. I would have had to drink 18 liters of that water to hit ld50. The press presents it as a lethal dose in some tellings. From: Steve Jones Sent: Tuesday, February 9, 2021 9:35 AM To: AnimalFarm Microwave Users Group Subject: Re: [AFMUG] Wow This sounds a whole lot more like an ex employee with a RAT than "hackers". GUI driven access to a water systems control and setting a specific value is not the work of "hackers" I used to work at a factory as a supervisor of the contract staff when i was like 18, one of my roles was to record a message on the PBX every night indicating who was working, who was laid off, etc. I went to jail and lost that job. some time later i was bored so dialed into the system and tried out the numbers i pressed in house to see if there was external access to record the message. there was. The message happened to be changed to "nobody has to fucking work" that night, or so I hear. half the staff didnt show up. They were "hacked" too On Tue, Feb 9, 2021 at 9:58 AM Mike Hammett <[email protected]> wrote: TeamViewer even... ----- Mike Hammett Intelligent Computing Solutions Midwest Internet Exchange The Brothers WISP ---------------------------------------------------------------------------- From: "Cameron Crum" <[email protected]> To: "AnimalFarm Microwave Users Group" <[email protected]> Sent: Tuesday, February 9, 2021 9:55:12 AM Subject: Re: [AFMUG] Wow 1. Why is the system exposed to the public internet at all? 2. Why would they have remote desktop on a machine that has access to these systems? Like most municipal IT departments, they are probably staffed with guys who couldn't get a better job in the private sector. Scary. On Tue, Feb 9, 2021 at 9:46 AM Bill Prince <[email protected]> wrote: In one of the reports I read, they described the mouse/cursor moving around as if an invisible hand was moving it. Sounds to me as if they're doing a remote desktop or something? bp <part15sbs{at}gmail{dot}com>On 2/9/2021 7:42 AM, Nate Burke wrote: It's like the hacks of every late 80s-early90's moving coming true. On 2/9/2021 8:45 AM, Jaime Solorza wrote: https://www.cnn.com/2021/02/08/us/oldsmar-florida-hack-water-poison/index.html -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com ------------------------------------------------------------------------------ -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com -------------------------------------------------------------------------------- -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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