Usually, at that level, an HSM (Hatdware Security Module (ex: https://www.entrust.com/products/hsm), but also a fair number of processes and procedures around things like private key generation, key attestation, key verification, certificate renewals, etc etc etc).
There are some parallels with a TPM, but also a great deal of divergence (more so than in common, really).
> Tuning suggestions include looking at the duration of the parent process (proc.ppid.duration) to define your long-running app processes. Checking for newer fields such as proc.vpgid.name and proc.vpgid.exe instead of the direct parent process being a non-shell application could make the rule more robust.
There is an additional aspect to this, I think - `stace` has a hell (order of 100x AFAIK) of an impact on performance of the process being traced. Aside from obvious, this leads to things like hiding race conditions.
I can confirm that getting a PiKVM has very much eliminated lugging around my server or a screen. Having some form of display input would be the one feature I would wish to add if given the choice. Not having HDMI-In, e.g. via capture card, makes sense in this form factor and power budget, but would make this an instant buy for me. I would really enjoy having a small, very portable device to debug things with.
I recently got linked to a CCTV tester [1] that at least handles the display part. Sadly it does not seem to have keyboard emulation. It might be possible to hack this in as this is an Android tablet at its core and the USB controller might support gadget mode.
Another trend I have seen[1]
] (US market, high performance/high energy efficiency homes) is the use of HVAC and separate, standalone dehumidifier to do the same thing - take out humidity out of the air that the AC system has to otherwise both cool and dehumidify on it own.
The framing (at least as I understood it) was more on the psychometric side - 24C@65% relatuve humidity _feels_ worse than 27C@45%RH, but the energy savings aspect is also non-trivial.
As an aside - a fairly large number of central AC systems in the US do not have a humidity censor, so they only go by the temperature set point. Upgrading to control system which does measure humidity, while energy inefficient (because AC would be used to dehumidify the air _below_ the target set point), is an option, though not as good as having a stand-alone humidity control system. Sadly, I am unaware of Nest and/or Ecobee's support for this sort of a setup. Probably not cost effective for them. :\
> The framing (at least as I understood it) was more on the psychometric side - 24C@65% relatuve humidity _feels_ worse than 27C@45%RH
It's complicated to quantify, but in a sense 24C@65% is warmer than 27C@45%RH. Or rather, maintaining your body temperature is more difficult in the former than in the latter.
The human body produces ~100W of heat, and the primary way to get rid of it in warm weather is evaporative cooling: at below 100% relative humidity water slowly evaporates, this takes energy and thus cools down the surface the water was sitting on. We use that by coating us in sweat and letting it evaporate. This is more efficient the lower the relative humidity is.
The attempt to quantify this in a nice metric is the wet bulb temperature (what would a thermometer with a wet cloth around it show). 24C@65% is a wet bulb temp of 19.3C, 27C@45% is a wet bulb temp of 18.8C
> Sadly, I am unaware of Nest and/or Ecobee's support for this sort of a setup. Probably not cost effective for them. :\
I've got both of these. Nest has a setting for 'cool to dry', but my climate is usually not humid and hot at the same time. I don't see a similar feature on the Ecobee, but the Ecobee app is perhaps more confusing. It does send alerts when the detected humidity is above set points. Where I do have issues with humidity is in my basement; typically the basement stays around 5-10 F less than the first floor, and if the first floor is 50% relative humidity, moving the air into the basement results in a much higher relative humidity. If the a/c is running for the first floor, there's a good chance of significant condensation on the vents right after the air handler.
Right, I wasn't specofic - Ecobee will overcool with the main AC, but it does not have the 'I have a dehumidifier in my HVAC setup, go use THAT' setting.
> Sadly, I am unaware of Nest and/or Ecobee's support for this sort of a setup.
Same, and the worst part is that Nest already includes a hygrometer to show humidity in the app. All they need to give the user is a toggle: setpoint in regular dry bulb temperature, or setpoint in calculated wet bulb temperature (or heat index or "feels like" or whatever user-friendly calculation). Although their remote temperature sensors don't have a hygrometer, only the main unit.
Another option is a variable speed condensing unit. This is what I am looking at doing next.
A dedicated central dehumidifier is nice, but I've found them to be kind of noisy, especially when installed in the attic. Its got its own compressor, so the vibrations will transfer into the structure.
You do not necessarily have to become all these things. There are whole communities around this sort of a thing - Will Prowse's DiY Solar Forum (https://diysolarforum.com/) is an awesome source for learning as an example.
The setup you describe - lacking microinverters - I think there are options there short of wholesale replacement [disclaimer: I, too, am a self-taught in this field, and so am likely wrong in non-trivial ways]
There is non-trivial chance that once these enter the civilian market (say, via a government auction), there will be a requirement for the buyer to add the emissions control components back.
I can’t say the software is untrustworthy anymore but the whole ownership change was poorly handled and I can’t blame anyone wanting to jump ship after that.
Did we really know the previous owners then any more? But somehow trust was extended to them. Maybe the incentives to keep the gold goose brand alive selling the same products and upgrades outweighs the temporary potential value of a security researcher finding your Mac utility was actually trojaned to be a clandestine intelligence gathering app or a boiler-room ransomware vector. Not everyone is a malicious FOSS contributor and paranoia shouldn't be the first instinct.
There are some parallels with a TPM, but also a great deal of divergence (more so than in common, really).