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Groups > comp.os.linux.misc > #89521 > unrolled thread
| Started by | c186282 <c186282@nnada.net> |
|---|---|
| First post | 2026-08-03 20:50 -0400 |
| Last post | 2026-08-05 11:46 +0100 |
| Articles | 20 on this page of 42 — 5 participants |
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LOTS of US Water Plants Hit by Hacks c186282 <c186282@nnada.net> - 2026-08-03 20:50 -0400
Re: LOTS of US Water Plants Hit by Hacks rbowman <bowman@montana.com> - 2026-08-04 07:10 +0000
Re: LOTS of US Water Plants Hit by Hacks "Carlos E. R." <robin_listas@es.invalid> - 2026-08-04 10:44 +0200
Re: LOTS of US Water Plants Hit by Hacks rbowman <bowman@montana.com> - 2026-08-04 17:53 +0000
Re: LOTS of US Water Plants Hit by Hacks c186282 <c186282@nnada.net> - 2026-08-05 02:47 -0400
Re: LOTS of US Water Plants Hit by Hacks rbowman <bowman@montana.com> - 2026-08-05 20:26 +0000
Re: LOTS of US Water Plants Hit by Hacks The Natural Philosopher <tnp@invalid.invalid> - 2026-08-04 11:14 +0100
Re: LOTS of US Water Plants Hit by Hacks rbowman <bowman@montana.com> - 2026-08-04 18:07 +0000
Re: LOTS of US Water Plants Hit by Hacks c186282 <c186282@nnada.net> - 2026-08-05 02:55 -0400
Re: LOTS of US Water Plants Hit by Hacks The Natural Philosopher <tnp@invalid.invalid> - 2026-08-05 11:42 +0100
Re: LOTS of US Water Plants Hit by Hacks rbowman <bowman@montana.com> - 2026-08-05 14:09 +0000
Re: LOTS of US Water Plants Hit by Hacks The Natural Philosopher <tnp@invalid.invalid> - 2026-08-05 18:42 +0100
Re: LOTS of US Water Plants Hit by Hacks Robert Riches <spamtrap42@jacob21819.net> - 2026-08-05 20:19 +0000
Re: LOTS of US Water Plants Hit by Hacks rbowman <bowman@montana.com> - 2026-08-05 22:38 +0000
Re: LOTS of US Water Plants Hit by Hacks The Natural Philosopher <tnp@invalid.invalid> - 2026-08-06 12:45 +0100
Re: LOTS of US Water Plants Hit by Hacks rbowman <bowman@montana.com> - 2026-08-06 21:03 +0000
Re: LOTS of US Water Plants Hit by Hacks The Natural Philosopher <tnp@invalid.invalid> - 2026-08-06 22:30 +0100
Re: LOTS of US Water Plants Hit by Hacks The Natural Philosopher <tnp@invalid.invalid> - 2026-08-06 12:19 +0100
Re: LOTS of US Water Plants Hit by Hacks rbowman <bowman@montana.com> - 2026-08-06 20:43 +0000
Re: LOTS of US Water Plants Hit by Hacks rbowman <bowman@montana.com> - 2026-08-05 22:36 +0000
Re: LOTS of US Water Plants Hit by Hacks The Natural Philosopher <tnp@invalid.invalid> - 2026-08-06 12:37 +0100
Re: LOTS of US Water Plants Hit by Hacks rbowman <bowman@montana.com> - 2026-08-06 21:12 +0000
Re: LOTS of US Water Plants Hit by Hacks The Natural Philosopher <tnp@invalid.invalid> - 2026-08-06 22:33 +0100
Re: LOTS of US Water Plants Hit by Hacks rbowman <bowman@montana.com> - 2026-08-07 04:45 +0000
Re: LOTS of US Water Plants Hit by Hacks c186282 <c186282@nnada.net> - 2026-08-07 01:57 -0400
Re: LOTS of US Water Plants Hit by Hacks The Natural Philosopher <tnp@invalid.invalid> - 2026-08-07 11:44 +0100
Re: LOTS of US Water Plants Hit by Hacks The Natural Philosopher <tnp@invalid.invalid> - 2026-08-07 11:42 +0100
Re: LOTS of US Water Plants Hit by Hacks c186282 <c186282@nnada.net> - 2026-08-06 23:41 -0400
Re: LOTS of US Water Plants Hit by Hacks c186282 <c186282@nnada.net> - 2026-08-06 02:19 -0400
Re: LOTS of US Water Plants Hit by Hacks c186282 <c186282@nnada.net> - 2026-08-06 02:18 -0400
Re: LOTS of US Water Plants Hit by Hacks rbowman <bowman@montana.com> - 2026-08-06 20:14 +0000
Re: LOTS of US Water Plants Hit by Hacks "Carlos E. R." <robin_listas@es.invalid> - 2026-08-06 14:22 +0200
Re: LOTS of US Water Plants Hit by Hacks rbowman <bowman@montana.com> - 2026-08-06 21:19 +0000
Re: LOTS of US Water Plants Hit by Hacks The Natural Philosopher <tnp@invalid.invalid> - 2026-08-05 11:40 +0100
Re: LOTS of US Water Plants Hit by Hacks rbowman <bowman@montana.com> - 2026-08-05 20:39 +0000
Re: LOTS of US Water Plants Hit by Hacks The Natural Philosopher <tnp@invalid.invalid> - 2026-08-06 12:35 +0100
Re: LOTS of US Water Plants Hit by Hacks rbowman <bowman@montana.com> - 2026-08-06 20:27 +0000
Re: LOTS of US Water Plants Hit by Hacks c186282 <c186282@nnada.net> - 2026-08-05 00:58 -0400
Re: LOTS of US Water Plants Hit by Hacks rbowman <bowman@montana.com> - 2026-08-05 06:14 +0000
Re: LOTS of US Water Plants Hit by Hacks c186282 <c186282@nnada.net> - 2026-08-05 03:52 -0400
Re: LOTS of US Water Plants Hit by Hacks rbowman <bowman@montana.com> - 2026-08-05 14:07 +0000
Re: LOTS of US Water Plants Hit by Hacks The Natural Philosopher <tnp@invalid.invalid> - 2026-08-05 11:46 +0100
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| From | The Natural Philosopher <tnp@invalid.invalid> |
|---|---|
| Date | 2026-08-06 12:37 +0100 |
| Message-ID | <1151rm5$3p218$10@dont-email.me> |
| In reply to | #89617 |
On 05/08/2026 23:36, rbowman wrote: > I learned something else of value. We bought the bare press frame from > Daniels of Stroud. > > https://www.stroudlocalhistorysociety.org.uk/research/daniels/ > > Shortly before it was to be shipped the UK had one of their little dock > strikes. A 100 ton press refers to the clamping force and doesn't weigh > 100 tons but shipping the thing air freight was a bit pricey. It would > hardly fit into your carry on luggage. > > Depending on international trade has its drawbacks. As does unionised dock labour. There are no dockers any more. Just one man in a crane and containers everywhere -- "And if the blind lead the blind, both shall fall into the ditch". Gospel of St. Mathew 15:14
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| From | rbowman <bowman@montana.com> |
|---|---|
| Date | 2026-08-06 21:12 +0000 |
| Message-ID | <ndkbm7Ff88dU14@mid.individual.net> |
| In reply to | #89632 |
On Thu, 6 Aug 2026 12:37:41 +0100, The Natural Philosopher wrote: > On 05/08/2026 23:36, rbowman wrote: >> I learned something else of value. We bought the bare press frame from >> Daniels of Stroud. >> >> https://www.stroudlocalhistorysociety.org.uk/research/daniels/ >> >> Shortly before it was to be shipped the UK had one of their little dock >> strikes. A 100 ton press refers to the clamping force and doesn't weigh >> 100 tons but shipping the thing air freight was a bit pricey. It would >> hardly fit into your carry on luggage. >> >> Depending on international trade has its drawbacks. > > As does unionised dock labour. > > There are no dockers any more. Just one man in a crane and containers > everywhere My brother-in-law was in the Merchant Marine as a deck officer. The switch to containers came early in his career. No more exploring foreign ports. Dock at 2AM, be off again by 6AM. While he had a master's rating he never sailed higher than 2nd mate, and then only for 6 months out of the year. The Masters, Mates & Pilots union was parceling out work in a dying industry. Dying for US flagged vessels, that is. I'd considered that career in high school as an engineering officer rather than a deck officer. Thankfully I went in another direction.
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| From | The Natural Philosopher <tnp@invalid.invalid> |
|---|---|
| Date | 2026-08-06 22:33 +0100 |
| Message-ID | <1152ujr$501h$11@dont-email.me> |
| In reply to | #89664 |
On 06/08/2026 22:12, rbowman wrote: > My brother-in-law was in the Merchant Marine as a deck officer. The switch > to containers came early in his career. No more exploring foreign ports. > Dock at 2AM, be off again by 6AM. While he had a master's rating he never > sailed higher than 2nd mate, and then only for 6 months out of the year. > The Masters, Mates & Pilots union was parceling out work in a dying > industry. Dying for US flagged vessels, that is. I'd considered that > career in high school as an engineering officer rather than a deck > officer. Thankfully I went in another direction. Yes. register your ship in Liberia and pick whatever crew you could get at below minimum wage. Out of interest I looked it up. Crew on a large container ship can be as few as 10 and as many as 30, but no more than that. Nice cheap way to push goods round the world They will be nuclear in ten years, most likely -- "It was a lot more fun being 20 in the 70's that it is being 70 in the 20's" Joew Walsh
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| From | rbowman <bowman@montana.com> |
|---|---|
| Date | 2026-08-07 04:45 +0000 |
| Message-ID | <ndl67vFf88dU25@mid.individual.net> |
| In reply to | #89669 |
On Thu, 6 Aug 2026 22:33:47 +0100, The Natural Philosopher wrote: > On 06/08/2026 22:12, rbowman wrote: >> My brother-in-law was in the Merchant Marine as a deck officer. The >> switch to containers came early in his career. No more exploring >> foreign ports. >> Dock at 2AM, be off again by 6AM. While he had a master's rating he >> never sailed higher than 2nd mate, and then only for 6 months out of >> the year. >> The Masters, Mates & Pilots union was parceling out work in a dying >> industry. Dying for US flagged vessels, that is. I'd considered that >> career in high school as an engineering officer rather than a deck >> officer. Thankfully I went in another direction. > > Yes. register your ship in Liberia and pick whatever crew you could get > at below minimum wage. Jack London's 'The Mutiny of the Elsinore' isn't one of his works on reading lists like 'Call of the Wild'. https://obdg.blogspot.com/2013/05/the-mutiny-of-elsinore-by-jack- london.html He might be describing the crew of a Liberian vessel. The socialists would like to include London in their fold but they have to tread very lightly.
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| From | c186282 <c186282@nnada.net> |
|---|---|
| Date | 2026-08-07 01:57 -0400 |
| Message-ID | <WMmcnQ8NqIY97uj3nZ2dnZfqnPudnZ2d@giganews.com> |
| In reply to | #89679 |
On 8/7/26 00:45, rbowman wrote: > On Thu, 6 Aug 2026 22:33:47 +0100, The Natural Philosopher wrote: > >> On 06/08/2026 22:12, rbowman wrote: >>> My brother-in-law was in the Merchant Marine as a deck officer. The >>> switch to containers came early in his career. No more exploring >>> foreign ports. >>> Dock at 2AM, be off again by 6AM. While he had a master's rating he >>> never sailed higher than 2nd mate, and then only for 6 months out of >>> the year. >>> The Masters, Mates & Pilots union was parceling out work in a dying >>> industry. Dying for US flagged vessels, that is. I'd considered that >>> career in high school as an engineering officer rather than a deck >>> officer. Thankfully I went in another direction. >> >> Yes. register your ship in Liberia and pick whatever crew you could get >> at below minimum wage. > > Jack London's 'The Mutiny of the Elsinore' isn't one of his works on > reading lists like 'Call of the Wild'. > > https://obdg.blogspot.com/2013/05/the-mutiny-of-elsinore-by-jack- > london.html > > He might be describing the crew of a Liberian vessel. The socialists would > like to include London in their fold but they have to tread very lightly. Well, sometimes London sounded like a 'socialist' but really he wasn't. They can try to STEAL and BIAS his stuff but they won't be entirely successful. Alas the modern gens won't REALIZE the distortions ... in USA "history" is kind of forbidden now, you can ONLY teach the ultra-left 'truths' to the kiddies Or ELSE.
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| From | The Natural Philosopher <tnp@invalid.invalid> |
|---|---|
| Date | 2026-08-07 11:44 +0100 |
| Message-ID | <1154ctj$j5m2$4@dont-email.me> |
| In reply to | #89681 |
On 07/08/2026 06:57, c186282 wrote: > Alas the modern gens won't REALIZE the distortions ... > in USA "history" is kind of forbidden now, you can > ONLY teach the ultra-left 'truths' to the kiddies > Or ELSE. Instead of creationism... TBH I see the USA more than any other country as bing torn apart by two different lies, while the truth dares not show its face... -- "In our post-modern world, climate science is not powerful because it is true: it is true because it is powerful." Lucas Bergkamp
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| From | The Natural Philosopher <tnp@invalid.invalid> |
|---|---|
| Date | 2026-08-07 11:42 +0100 |
| Message-ID | <1154cpu$j5m2$3@dont-email.me> |
| In reply to | #89679 |
On 07/08/2026 05:45, rbowman wrote: > On Thu, 6 Aug 2026 22:33:47 +0100, The Natural Philosopher wrote: > >> On 06/08/2026 22:12, rbowman wrote: >>> My brother-in-law was in the Merchant Marine as a deck officer. The >>> switch to containers came early in his career. No more exploring >>> foreign ports. >>> Dock at 2AM, be off again by 6AM. While he had a master's rating he >>> never sailed higher than 2nd mate, and then only for 6 months out of >>> the year. >>> The Masters, Mates & Pilots union was parceling out work in a dying >>> industry. Dying for US flagged vessels, that is. I'd considered that >>> career in high school as an engineering officer rather than a deck >>> officer. Thankfully I went in another direction. >> >> Yes. register your ship in Liberia and pick whatever crew you could get >> at below minimum wage. > > Jack London's 'The Mutiny of the Elsinore' isn't one of his works on > reading lists like 'Call of the Wild'. > > https://obdg.blogspot.com/2013/05/the-mutiny-of-elsinore-by-jack- > london.html > > He might be describing the crew of a Liberian vessel. The socialists would > like to include London in their fold but they have to tread very lightly. > The socialists want to appropriate everything popular. I wonder how they would get on with 'sometimes a great notion' [book] -- "In our post-modern world, climate science is not powerful because it is true: it is true because it is powerful." Lucas Bergkamp
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| From | c186282 <c186282@nnada.net> |
|---|---|
| Date | 2026-08-06 23:41 -0400 |
| Message-ID | <pr-dnemNHKBuzuj3nZ2dnZfqn_idnZ2d@giganews.com> |
| In reply to | #89632 |
On 8/6/26 07:37, The Natural Philosopher wrote: > On 05/08/2026 23:36, rbowman wrote: >> I learned something else of value. We bought the bare press frame from >> Daniels of Stroud. >> >> https://www.stroudlocalhistorysociety.org.uk/research/daniels/ >> >> Shortly before it was to be shipped the UK had one of their little dock >> strikes. A 100 ton press refers to the clamping force and doesn't weigh >> 100 tons but shipping the thing air freight was a bit pricey. It would >> hardly fit into your carry on luggage. >> >> Depending on international trade has its drawbacks. > > As does unionised dock labour. > > There are no dockers any more. Just one man in a crane and containers > everywhere Loved the story a few years ago when they realized that all those huge cranes had Chinese cameras in them - which phoned home. Ergo the CCP could track ALL containers across the entire world :-) Sometimes the most effective spying is very subtle.
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| From | c186282 <c186282@nnada.net> |
|---|---|
| Date | 2026-08-06 02:19 -0400 |
| Message-ID | <H4mdneCmp73Uuun3nZ2dnZfqn_GdnZ2d@giganews.com> |
| In reply to | #89604 |
On 8/5/26 13:42, The Natural Philosopher wrote: > On 05/08/2026 15:09, rbowman wrote: >> On Wed, 5 Aug 2026 02:55:04 -0400, c186282 wrote: >> >>> Not sure how much 'steppers' were involved in THESE hacks. Sounds >>> more like spoofing instrument readings to cause downstream machinery >>> to run wild until it broke. >> >> Steppers faded away in the '70s. Mostly. Never underestimate the use of >> obsolete tech in US infrastructure. > > Steppers all over the place. Default thing to drive car instruments > these days. And 3D printers. And laser printers. And BIG stuff too ! Nothing obsolete about steppers.
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| From | c186282 <c186282@nnada.net> |
|---|---|
| Date | 2026-08-06 02:18 -0400 |
| Message-ID | <H4mdneGmp72Ouun3nZ2dnZfqn_GdnZ2d@giganews.com> |
| In reply to | #89602 |
On 8/5/26 10:09, rbowman wrote: > On Wed, 5 Aug 2026 02:55:04 -0400, c186282 wrote: > >> Not sure how much 'steppers' were involved in THESE hacks. Sounds >> more like spoofing instrument readings to cause downstream machinery >> to run wild until it broke. > > Steppers faded away in the '70s. Mostly. Never underestimate the use of > obsolete tech in US infrastructure. Nothing wrong with steppers ... Even a lot of current tech - in the end it's running steppers. It's how mechanical stuff gets DONE in a quasi-quantifiable fashion. Or do you think DC/PWM gets it done ? Done that - NOT especially precise. At some point, 'software' has to translate into 'real world'. Best Dreams don't work valves and machines at the water plant.
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| From | rbowman <bowman@montana.com> |
|---|---|
| Date | 2026-08-06 20:14 +0000 |
| Message-ID | <ndk895Ff88dU10@mid.individual.net> |
| In reply to | #89620 |
On Thu, 6 Aug 2026 02:18:42 -0400, c186282 wrote: > Nothing wrong with steppers ... > > Even a lot of current tech - in the end it's running steppers. It's > how mechanical stuff gets DONE in a quasi-quantifiable fashion. See other posts about my use of 'steppers'. I should know by now to be more precise.
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| From | "Carlos E. R." <robin_listas@es.invalid> |
|---|---|
| Date | 2026-08-06 14:22 +0200 |
| Message-ID | <ndjck8F5jjU1@mid.individual.net> |
| In reply to | #89602 |
On 2026-08-05 16:09, rbowman wrote:
> On Wed, 5 Aug 2026 02:55:04 -0400, c186282 wrote:
>
>> Not sure how much 'steppers' were involved in THESE hacks. Sounds
>> more like spoofing instrument readings to cause downstream machinery
>> to run wild until it broke.
>
> Steppers faded away in the '70s. Mostly. Never underestimate the use of
> obsolete tech in US infrastructure.
If I understand correctly what steppers are, washing machines here have
been using them till recently. My previous one had that.
--
Cheers,
Carlos E.R.
ES🇪🇸, EU🇪🇺;
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| From | rbowman <bowman@montana.com> |
|---|---|
| Date | 2026-08-06 21:19 +0000 |
| Message-ID | <ndkc3hFf88dU15@mid.individual.net> |
| In reply to | #89638 |
On Thu, 6 Aug 2026 14:22:32 +0200, Carlos E. R. wrote: > If I understand correctly what steppers are, washing machines here have > been using them till recently. My previous one had that. https://www.electronicsforu.com/electronics-projects/hardware-diy/washing- machine-motor-controller It would make sense. A stepping relay with timer inputs could get the job done. My relationship with washing machines consists in dropping quarters down the slot. The really is one laundromat in town that is coin operated rather than a card swipe. It's something to do with 5 pounds of quarters.
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| From | The Natural Philosopher <tnp@invalid.invalid> |
|---|---|
| Date | 2026-08-05 11:40 +0100 |
| Message-ID | <114v3u4$2spu9$3@dont-email.me> |
| In reply to | #89559 |
On 04/08/2026 19:07, rbowman wrote:
> the wiring harness being laced rather than
> using those new fangled nylon TyWraps. Fortunately the girls, excuse me,
> female electronics technicians, were skilled in macrame.
I grew up with laced looms. Frankly a skilled operator can do them
faster than tie-wraps, and cheaper. I can still lace.
--
"The most difficult subjects can be explained to the most slow witted
man if he has not formed any idea of them already; but the simplest
thing cannot be made clear to the most intelligent man if he is firmly
persuaded that he knows already, without a shadow of doubt, what is laid
before him."
- Leo Tolstoy
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| From | rbowman <bowman@montana.com> |
|---|---|
| Date | 2026-08-05 20:39 +0000 |
| Message-ID | <ndhlcdF8voU5@mid.individual.net> |
| In reply to | #89586 |
On Wed, 5 Aug 2026 11:40:04 +0100, The Natural Philosopher wrote: > On 04/08/2026 19:07, rbowman wrote: >> the wiring harness being laced rather than using those new fangled >> nylon TyWraps. Fortunately the girls, excuse me, >> female electronics technicians, were skilled in macrame. > > I grew up with laced looms. Frankly a skilled operator can do them > faster than tie-wraps, and cheaper. I can still lace. I was a hair late for lacing. The last large control panels I designed used what we called Wiremold although I don't think that is the correct term. https://www.youtube.com/watch?v=0lKbCL0Gy2Y He finally opens the door at around 1:50 and it looks like home. With the wiremold you could add or replace wires as need without messing about with a harness.
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| From | The Natural Philosopher <tnp@invalid.invalid> |
|---|---|
| Date | 2026-08-06 12:35 +0100 |
| Message-ID | <1151ri0$3p218$9@dont-email.me> |
| In reply to | #89615 |
On 05/08/2026 21:39, rbowman wrote: > On Wed, 5 Aug 2026 11:40:04 +0100, The Natural Philosopher wrote: > >> On 04/08/2026 19:07, rbowman wrote: >>> the wiring harness being laced rather than using those new fangled >>> nylon TyWraps. Fortunately the girls, excuse me, >>> female electronics technicians, were skilled in macrame. >> >> I grew up with laced looms. Frankly a skilled operator can do them >> faster than tie-wraps, and cheaper. I can still lace. > > I was a hair late for lacing. The last large control panels I designed > used what we called Wiremold although I don't think that is the correct > term. > > https://www.youtube.com/watch?v=0lKbCL0Gy2Y > > He finally opens the door at around 1:50 and it looks like home. With the > wiremold you could add or replace wires as need without messing about with > a harness. https://en.wikipedia.org/wiki/Cable_lacing That is what we did. Often with solid core wires bent round nails driven into wood to identify branch points. Solid core was best for fixed installations where the wires were soldered as they didn't have stress concentrations at the soldered joint Then the loom was held down with cable ties - not zip ties - loops of plastic with holes at the end for a screw Surprisingly cheap compared to today's prices for looms. Minimum wage or piece work by home workers in the consumer industry...serried ranks of nimble fingered Asian ladies on the shop floor for Mil Spec (Flexible) PCBs today are cheaper. I remember trying to get everything to mount off PCBs by the late 1970s... -- “It is hard to imagine a more stupid decision or more dangerous way of making decisions than by putting those decisions in the hands of people who pay no price for being wrong.” Thomas Sowell
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| From | rbowman <bowman@montana.com> |
|---|---|
| Date | 2026-08-06 20:27 +0000 |
| Message-ID | <ndk91tFf88dU11@mid.individual.net> |
| In reply to | #89631 |
On Thu, 6 Aug 2026 12:35:28 +0100, The Natural Philosopher wrote: > That is what we did. Often with solid core wires bent round nails driven > into wood to identify branch points. The first company I worked for had the contract to make the harnesses for the company I eventually went to. The harness board consisted to two 4x8' plywood panels with a lot of finishing nails. The final connections would be made in the field, so a bundle of unconnected wires were left. Nobody wanted to come up short so I think everyone in the process added a 'little bit'. I went to the site with the VP of the company to do the pilot setup. There was about 5 feet of 'little bits' I cut off. The VP gathered up all the wasted wire to take home and ram up somebody's butt. When I went with the other company I designed in Amphenol connectors. https://amphenol-aerospace.com/products/mil-spec-type-circulars No tedious and error prone hookups on site.
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| From | c186282 <c186282@nnada.net> |
|---|---|
| Date | 2026-08-05 00:58 -0400 |
| Message-ID | <S3Kdnbzan-dFX-_3nZ2dnZfqn_GdnZ2d@giganews.com> |
| In reply to | #89538 |
On 8/4/26 03:10, rbowman wrote: > On Mon, 3 Aug 2026 20:50:24 -0400, c186282 wrote: > >> Anyway, hardware PLCs are pretty stupid - you don't actually hack >> them directly. They're basically a replacement for a box of relays or >> equivs. Software PLCs - a uC or even better - are more "computers", >> oft net-connected these days. An Ard Uno would make a fair software >> PLC. A low-end PI even better. > > https://www.realpars.com/blog/plc-hardware > > What's a hardware PLC? There ARE 'chips' ... or, cruder, boards with a lot of transistors. Anyway, the GOAL is to replace those big boxes full of mechanical relays ye and me both remember. That "PLCs" are being BLAMED for these hacks - now that's just bullshit. Modern PLCs are set up using modern software - and THAT'S what's being hacked. > It amazed me to find that they still use the ladder > logic metaphor. I thought that was a temporary crutch > when they started showing up in the '70s. Never loved "ladder logic" diagrams. I've DONE it - in hardware and software - but it's not my favored perspective. Pref a more straight-up, logic-based, point of view. Yea yea, PLCs are "simple" and "rugged" - BUT ....... IMHO, 'software' based PLCs are the only modern way to go. Alas that also introduces vulnerabilities. Industries NEED PLCs ... so much machinery that needs coordination/logic. Clicky-clicky-clicky ... DID kind of like those old boxes full of relays :-) Anyway, are PLCs responsible for all these nasty hack in middle-America ? I don't think so. It's the all-ONLINE paradigm instead.
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| From | rbowman <bowman@montana.com> |
|---|---|
| Date | 2026-08-05 06:14 +0000 |
| Message-ID | <ndg2mjF4198U41@mid.individual.net> |
| In reply to | #89569 |
On Wed, 5 Aug 2026 00:58:46 -0400, c186282 wrote: > On 8/4/26 03:10, rbowman wrote: >> On Mon, 3 Aug 2026 20:50:24 -0400, c186282 wrote: >> >>> Anyway, hardware PLCs are pretty stupid - you don't actually hack >>> them directly. They're basically a replacement for a box of relays >>> or equivs. Software PLCs - a uC or even better - are more >>> "computers", >>> oft net-connected these days. An Ard Uno would make a fair >>> software PLC. A low-end PI even better. >> >> https://www.realpars.com/blog/plc-hardware >> >> What's a hardware PLC? > > There ARE 'chips' ... or, cruder, boards with a lot of transistors. Semantics. A transition device was Square D's NorPak system. There were a number of different cards that that mounted in a frame similar to a backplane. NOR gates are the simplest so those were the basic building blocks. Working with NOR, NAND, and NOT gates leads to brain bleed. https://www.ebay.com/itm/Norpak-Square-D-8852-L-19-Counter-4-Input-NOR-20- Pack-Series-A-FREE-SHIPPING-/282588704448 'Programming' was done by stripping wire, crimping on a tapered pin, and seating it with a too like an automatic center punch. Solid state relay logic...
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| From | c186282 <c186282@nnada.net> |
|---|---|
| Date | 2026-08-05 03:52 -0400 |
| Message-ID | <zvmdnTp6_oJ0du_3nZ2dnZfqnPWdnZ2d@giganews.com> |
| In reply to | #89576 |
On 8/5/26 02:14, rbowman wrote: > On Wed, 5 Aug 2026 00:58:46 -0400, c186282 wrote: > >> On 8/4/26 03:10, rbowman wrote: >>> On Mon, 3 Aug 2026 20:50:24 -0400, c186282 wrote: >>> >>>> Anyway, hardware PLCs are pretty stupid - you don't actually hack >>>> them directly. They're basically a replacement for a box of relays >>>> or equivs. Software PLCs - a uC or even better - are more >>>> "computers", >>>> oft net-connected these days. An Ard Uno would make a fair >>>> software PLC. A low-end PI even better. >>> >>> https://www.realpars.com/blog/plc-hardware >>> >>> What's a hardware PLC? >> >> There ARE 'chips' ... or, cruder, boards with a lot of transistors. > > Semantics. A transition device was Square D's NorPak system. There were a > number of different cards that that mounted in a frame similar to a > backplane. NOR gates are the simplest so those were the basic building > blocks. Working with NOR, NAND, and NOT gates leads to brain bleed. > > https://www.ebay.com/itm/Norpak-Square-D-8852-L-19-Counter-4-Input-NOR-20- > Pack-Series-A-FREE-SHIPPING-/282588704448 > > 'Programming' was done by stripping wire, crimping on a tapered pin, and > seating it with a too like an automatic center punch. Solid state relay > logic... Modern PLCs do not involve placing wires. HAVE done that, but the new paradigm is more 'software" or "software defined" These cyber-attacks ... they seem to have been aimed at a specific, widely used, PLC/programmming paradigm. FAIR chance nobody changed the default passwords. Governments tend to copy OTHER nearby govts ... "State/County X uses THIS and thus this justifies US using X".' Been there, seen this from the bureaucracy. The IDEA is to cover their asses in case something goes wrong. "We just did what THEY did !!!". Yet another reason I retired. It's all M$ Fault regardless, not OUR fault !!! Anyway, it was interesting to see "PLCs" blamed. Sorry, it's NOT the PLCs but WAY up the chain. CyberIdiocy CAN destroy us. What happens when they get into the power plants, the NUKE power plants ???
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