Domain: stackexchange.com
Stories and comments across the archive that link to stackexchange.com.
Comments · 819
-
Re:Wow.... crazy!
The code is usually based on the frost line so that heaving won't occur.
-
Re: People abusing positions of powerIf I was rude to you Sir I apologize, it's been a very busy week/weekend for me. From provided link. https://security.stackexchange...
If you have a phone with a removable main battery, you can try this: Disable the cellular network, GPS, WiFi, Bluetooth etc on your phone by turning them off manually and then putting the phone into flight mode.
Make a note of the current time shown on the phone and on your PC by writing it down on paper.
Shut down the phone, remove the main battery and the SIM card. Now wait 5 minutes.
Put the main battery back in, but not the SIM card and then turn the phone on again. The phone should still be in flight mode.
Note the current time on the phone again and the current time from your PC.
Remember when in Flight Mode and without the SIM card, the phone cannot get a time update from the cell tower. If a phone just stored the current time in flash memory before shutting down, then on powering on the phone it would be 5 minutes behind and match the time you wrote down on paper. This is because it would not know how much time had elapsed from when the phone had shut off and when it was turned on again. However that is not what happened, it kept up with the current time even when shut off and the battery was removed. That is because of the second battery on the phone.
mobile phone circuit board
This HowStuffWorks article looks into the inside of a digital mobile phone. Quoting from the article: "As you can see in the picture above, the speaker is about the size of a dime and the microphone is no larger than the watch battery beside it. Speaking of the watch battery, this is used by the mobile phone's internal clock chip." This would be similar to the function of a CMOS battery in every PC/laptop. There is also a February 2010 patent mentioning a primary and secondary battery of different size and capacity: "The first battery may discharge during use of the mobile phone without simultaneous discharge of the second battery. Upon discharge of the first battery, the second battery may not be automatically activated."
A standard silver cell watch battery has a capacity of 200 mAh, a Zinc-air battery has a capacity of 620 mAh. From personal experience, my battery in my wristwatch has lasted for over a decade as it was just keeping the time, running alarms and the odd stopwatch. I am not certain which capacity the secondary battery is which is installed on most mobile phones but it could contain a newer, powerful one installed by the manufacturers. The design of mobile phones is typically a closed design. There is a new micro-battery that could fit in and power a credit-card-thin device and be charged 1,000 times faster than regular batteries. Therefore every time you charged your phone, it would charge the secondary battery as well.
When the phone is turned off and the main battery is removed, the secondary battery could do more than just keep track of the time. It is all connected to the same circuitry so it could leave certain chips powered on in a low power state, for example the GPS, the microphone, the camera, or the closed baseband processor on every mobile phone.
Now, hypothetically the secondary battery could be remotely activated and periodically do a burst transmission every x minutes and send GPS coordinates or microphone recordings back to your favourite 3 letter agency. If the chips were just passively transmitting, perhaps they need a StingRay or Reaper drone in the area to boost the signal. The cell tower itself may be powerful enough to pick up the signal.
This article states that the NSA can technically listen in to the microphone of an iPhone even if it is switched off. In Edward Snowden's conversations with Laura Poitras he advised her to put her mobile in the freezer. In Snowden's NBC interview he mentions "They can absolutely turn them on w
-
Re: People abusing positions of power
-
"High Road" my shiny metal ass
For 2.5 years, Snapchat foolishly tried to take the high road versus Facebook...
Snapchat is the only social media provider I've found to be even LESS careful with private data than Facebook.
They've disclosed their encryption key in source code.
They store user data in cleartext.
They didn't deploy end to end encryption until 2019.
It is hard to stumble over such as low bar as Facebook's "security", but Snapchat has done it.
-
Re: What is the difference?
-
Re:How will they certify it?
-
Re:I don't know if I'd call it self regulation
overall, airliner travel remains the safest mode of transportation by far
And you can improve your odds further by avoiding flying in a 737, which has five times the accident rate of the Airbus 320.
-
Re:Universe expanding
A photon as a particle will travel in a straight line as you classically think, however it is also a wave and has uncertainty according to Heisenberg uncertainty. If you constrain the photons position, say by emitting it from a point and passing it through an arbitrarily small orifice, cementing position, momentum blows up and spreads it out. This is the source of diffraction in slit experiments.
-
Re:FTL Photons Again?
A rotating black hole of stellar mass has huge amount of energy. It can be extracted in a variety of ways: https://physics.stackexchange....
However, this black hole will have a stellar mass, so putting it on a ship makes little sense. Unless you want to move the whole star system, of course. -
Re:I guess the incredibly obvious question is...
Usually there are 3+ pitot tubes. Looks like the 737 has 5, with 3 of them dedicated to measuring airspeed. It's incredibly rare that a single fault causes a crash. Reporters just like to write up their stories that way to give their stories more impact, even if it twists the truth.
This isn't the first time faulty airspeed readings led to a flight computer has led to a crash. It isn't even the second time. In all previous cases, the plane was flyable. It was the confusion as the pilots tried to diagnose the problem based on the bizarre behavior of the plane and the flight control software and alarms which doomed the flights. It requires a deep and thorough understanding of when different flight protection modes in the software are triggered and kick in, to work backwards from the behavior you're seeing, to what problem(s) could be triggering those modes. If you've debugged software, you've encountered this. Unlike natural laws like physics, software can be designed arbitrarily. So your intuitive feel for how things should work becomes useless for tracking down the problem. You're totally dependent on how thoroughly you understand the software's arbitrary design.
Bear in mind that the stall warning is pretty much a "you're gonna die if you ignore me" warning. So it takes quite a bit of convincing before pilots will decide it's the warning that's faulty, not something else that they're doing wrong. That may be the cause of the reluctance of pilots to simply shut it off and fly the plane "by the seat of their pants" based on how the throttle settings, altitude, and attitude. So while theoretically the stall warning triggering incorrectly is a recoverable problem, it may take pilots a long time to diagnose and clear up the problem. Long enough for the plane to crash. -
Re:Project Treble
Name a SINGLE phone that actually supports using GSI
Google's Pixel phones are the obvious examples, as they're designed for easy user unlocking. But any of the phones listed here or here can also be unlocked, and many of them like the recent-ish OnePlus, Xiaomi, and Huawei phones are easy to flash GSIs to. Other compatible phones may require root first, like with any pre-GSI custom rom. And any unlockable phone shipping with Android 8.0+ can run any of the many GSI roms - regardless of the vendor's (lack of) updates.
Bonus Points if you can name a phone where the OEM took the time to update a pre-8 device to treble...
Better, here's a whole list.
-
Re:Sort of
My understanding is that the influx of precious metals from the new world to Spain created inflation.
https://history.stackexchange....
Though Wiki seems to show more nuances, https://en.wikipedia.org/wiki/... -
Hydrogen is a different = new safety issues
Hydrogen is a significantly different set of engineering issues with respect to hydrocarbons.
flammable range for natural gas is five to 15 percent,
Now while the explosive limits of hydrogen in air range from about 18 -- 60 % the flammable limits are from 4 -- 75 %, in oxygen the limit of flammability goes all the way from 4% to 95% read: for practical purposes, hydrogen in oxygen is always at least a flammable mixture.
Also need to be weary of hydrogen embrittlement.These are not unsolvable problems but do require care on everyon's part.
-
Re:Interstellar probe?
You're kind of a moron, aren't you?
-
That's a buttload of TRS-80s
$10 million should buy about 73,000 TRS-80s, if you figure $100 each plus $37 shipping. At an estimated weight of 44 lbs each, that comes to 3.2 million lbs, or 1605 tons. Here's yer first shipment. Cmon back. Cmon back.
-
How hard is 3Gs with good chairs?
How many people old enough to afford it can stand the 9Gs necessary
With good chairs that doesn't seem like much of a stretch.
-
Re:U2F FTW!
This looks like a classic man-in-the-middle attack. FIDO U2F makes MITM attacks much harder, but not impossible. https://security.stackexchange.com/questions/157756/mitm-attacks-on-fido-uaf-and-u2f
Soemtimes the implementation is a bit off as well. I've had an Apple account where it tells me there is a new logon, asks me to allow it, sends the code and opens up a popup to enter the code. All very nice, except it happens on the machine I am using to login. I am not sure why it does that, a Handoff issue, but it seems a bit nonsensical the "extra protection" only requires me todo extra steps all on the same device.
-
Re:U2F FTW!
This looks like a classic man-in-the-middle attack. FIDO U2F makes MITM attacks much harder, but not impossible. https://security.stackexchange.com/questions/157756/mitm-attacks-on-fido-uaf-and-u2f
-
Re:China, no question
The bank used to facilitate the deal was a company operating and registered in the US that she directly acted to defraud (possibly while physically in the US). This link may help explain it:
https://law.stackexchange.com/...
Also at some point SkyCom sold US-made equipment to Iran.
She doesn't work for the US bank though, she works for a Chinese company. What SkyCom did in the past is irrelevant. It may be illegal for the US bank to operate with Iran- but it is not illegal for a Chinese citizen working for a Chinese company within China to work with Iran.
But it is illegal for them to do business in America in that case, which they do.
Chinese companies can sell all they want to Iran, they just can't sell to America anymore without breaking the law.
Much like if I sell things in china I have to follow Chinese law. A country can place whatever restrictions on international trade it wants.
-
Re:China, no question
The bank used to facilitate the deal was a company operating and registered in the US that she directly acted to defraud (possibly while physically in the US). This link may help explain it:
https://law.stackexchange.com/...
Also at some point SkyCom sold US-made equipment to Iran.
She doesn't work for the US bank though, she works for a Chinese company. What SkyCom did in the past is irrelevant. It may be illegal for the US bank to operate with Iran- but it is not illegal for a Chinese citizen working for a Chinese company within China to work with Iran.
-
Re:China, no question
The bank used to facilitate the deal was a company operating and registered in the US that she directly acted to defraud (possibly while physically in the US). This link may help explain it:
https://law.stackexchange.com/...
Also at some point SkyCom sold US-made equipment to Iran.
-
Re:99.999999% of Users NOT at Risk?
I thought FIDO was un MITMable (not quite sure how, but that's their premise).
You need the system itself to have a direct channel to the key (and that to actually be secure), and then the key sends a response.
So basically PayPal sends challenge that goes directly to the key, key sends response directly to PayPal. Malicious app (or website) cannot get in the center of this, because, I don't know, reasons I guess.
I suspect that there is a public key for the destination that is published somehow and therefore the response can't be intercepted. Similarly the challenge can be signed so that it is verified from coming from the correct source.
I guess if it's mimicking clicks using an authenticator app doesn't help.
It looks like to spoof U2F, at the very least they'd need to compramise a cert authority. That seems like it would prevent SMS hijacking and the vast majority of MITM
-
Re:Billions of micro-organisms
There are billions of micro-organisms in a pot of yogurt. Did you mean billions of species, or billions of tons?
I assume you're addressing the difference between the title of TFS (billions of organisms and the content of TFS ("billions of tonnes"). I guess they should have cited the conversion factor.
One source I found says, "The human body has 10^13 human cells and hosts 9x10^13 bacterial cells." and "mass of bacterial cells in one human body = (0.95×10^15 * 9x10^13) kg = 0.0855 kg = 86 g". So, 1 gram of bacterial cells comprises 9 * 10^13 cells / 86, or 1,058,823,529,412. A metric ton (tonne) is a million grams, so it would comprise roughly 1.06 * 10^18 cells. Of course, that assumes that the average size of the microorganisms is the same as e. coli.
-
Re:Prediction for 4096-bit RSA? How about EC?
NSA also crippled the maths for generating unpredictable curves. Well, NIST did that, in collusion with the NSA request, resulting in FIPS 186-3.
https://crypto.stackexchange.c...You hint at this in your last statement. We can NEVER trust spooks. They are not here to help. Ever. Period.
-
Re:lol...Blind Signatures
This StackExchange post thinks differently: https://crypto.stackexchange.c...
-
Re:Sad
I loved how he always did a cameo in every Marvel movie.
Not trying to rain on the parade of commemorating the passing of Stan Lee, but he did not appear in every Marvel movie. See Which Marvel movies have NOT included Stan Lee cameos, and why?
That link lists at least 17 Marvel movies he didn't have a cameo in.
-
Re:Linux on a new Mac — why?
The latest update on the article points here:
https://unix.stackexchange.com...Linux is simply blocked from even seeing the SSD hardware by the T2 chip.
I see that; but I also see that this was:
1. A 2018 Macbook Pro, not the Mac mini (yeah, I know; but...)
2. High Sierra, not Mojave.
But if this is indeed still the case, I would agree that that behavior is in derogation with what is rather explicitly stated in the Secure Boot Utility documentation and Apple's whitepaper about the T2 chip and the Secure Boot process.
However, all I see is a bunch of echo-chamber blog postings that, in typical internet-meme-fashion, employ circular references as "proof".
IOW, I'm still not buyin' it; not with these self-referential "sources".
-
Re:Linux on a new Mac — why?
The latest update on the article points here:
https://unix.stackexchange.com...Linux is simply blocked from even seeing the SSD hardware by the T2 chip.
-
Re:Yes and No
DevOps is not a role and if you are hiring "DevOps Engineers" you are doing it wrong. You don't hire "Agile Developers" - agile is a method that developers use. The same goes for DevOps. It is a way of running a team. That team should be made up of generalists and specialists as is appropriate to the size and business needs of the organization.
-
Re: And how do I get my Google account back?
Confirmed by this stack exchange thread. I will give it a try, thanks.
-
Re:First generation?
No.
"Today's forest land area amounts to about 70 percent of the area that was forested in 1630."
https://skeptics.stackexchange... -
Re: "tasteful, snappy, polished tools"?
For database, I've been using dbForge and Dezign for Databases. Vastly superior to Microsoft's offering and it's not limited to one database. True, you pay for the privilege. Also true, they are not open source. So? I'd rather have something that does the job than something that has a particular badge. I'm willing to pay for a working product.
I've not tried OmniDB yet,but it looks interesting. That is open source - BSD, which is perfectly good as a license. It looks much better than Microsoft's SQL Server editor (which I've known to randomly destroy table content on a schema edit).
Visual Studio is a pain. The tool tips make it hard to read the text. It can't handle renaming a file to change the case. Its error highlighter is defective, randomly reporting spurious errors that vanish if you reboot VS. The build can sometimes show as complete when it has failed. A RAD tool like that should never report flags are incompatible because there's no value in a RAD over text editing a compile recipe if you can set impossible combinations - those should be sanity checked at input. You know, the way we were all taught to validate inputs when first taught programming.
VS' debugger has nothing on DDD.
https://softwarerecs.stackexch...
VS, on being presented with a wstring, shows a pointer. Getting it to show the string itself is horrible and getting it to handle such strings on re-entering the function is all but impossible as it relies on static evaluation of where things are. Sadly, DDD doesn't support Microsoft C/C++, or I'd use it exclusively.
Open source RAD? Meh. For Windows, Notepad++ with syntax highlighting is faster, easier and more robust. Eclipse is too heavy and I find its package manager gets confused easily. Otherwise, it would be a good project.
-
Some mystery as to why Venus has a thick atmospher
Venus has a weak magnetic field compared to earth. Current scientific opinion seems to be that earth's magnetic field is what kept earth from losing its atmosphere the way Mars did.
https://astronomy.stackexchange.com/questions/10189/why-did-venus-not-lose-its-atmosphere-without-magnetic-field -
Re:Does it even make sense?
I still don't see the link with electrons, though. The spheres in that article are macroscopic examples. None of that seems to apply to electrons, nor suggest they have some sort of shape.
Anyway, after some googling I found that they are not actually talking about the shape of the electron itself (which is a point particle as far as we know) but the cloud of virtual particles around it. Here's the link.
-
Re:OpenBSD OpenSSH not vulnerable
Confirmation of gweihir's statement.
Also, if you want to see whether there are any libssh libraries on your machine, you can find out where shared libraries are typically installed, and you should see an openssh directory rather than libssh directories or libraries. Or you can grep for libssh from the root directory.
-
Re:distraction...
Climate change actually means more rain. Warmer seas means more evaporation, and if that water goes into the air it has to come down again too, which means more precipitation. Of more concern that the amount of rain is where it goes - shifting patterns mean certain regions could still get dryer even as global rainfall grows, and if those regions happen to be major agricultural areas, famine is certainly a possibility.
You can have the air saturated with humidity and still not get rain. Please do inform yourself better. Things are not simple as they seem when it comes to this subject.
Normally people that say the things you've said are lazy, so I prepared this link for you. You're welcome.
-
Re: Wait, in all *NON*-accelerating reference fram
We assume as little as possible to deduce as much as possible. This is the general principle we follow. In special relativity, Einstein started by assuming the velocity of light, and the laws of physics generally, are the same in all inertial reference frames. At this point, he is not trying to produce an exhaustive list of when it is OK to say the speed of light is the constant 'c'. He wants to make the absolute minimum of assumptions to make his conclusions.
So can we say the speed of light is absolute? Here are some links:
-
Re:Inevitable
Probably a capture. But it's the density of the host planet - ten times Jupiter's - that is really interesting and being largely ignored.
Larger gas giants have greater densities so appear smaller than their mass would suggest.
Capture requires a significant third body.
-
Re:Can they do that?
Can you cite case law? This is still-actively-debated matter in U.S.
P.S. I know it's already decided in U.K., but you Brits never had as much rights as we do anyway.
-
Re:There goes most encryption
Nope.
https://math.stackexchange.com...
And elliptic curve cryptography has even less to with primes. Nor most of the "post-quantum" cryptography already available.
-
Re:Vulcan eh
Also it has like 8X the mass of Earth and 2X as big. How would gravity be there?
"The planet is roughly twice the size of Earth". I've looked and looked, and CAN'T find anyone estimating the gravity of the planet. I presume they don't know.
My knee-jerk reaction was "twice the gravity" as well, but I think it's going to be 4x the gravity, because of radius and size and all. (inverse-square law.) In any case, here's an article about launching rockets from larger, heavier planets. Link, pretty link. It's not a happy story. At 10.4g, rocket mass is one fifth of the mass of the planet.
A modern design, larger rocket than the Saturn V, with modifications to increase the T/W ratio could probably make it to orbit on a 2x radius, 8x mass Earth. -
Re:Security implications?
Because it's impossible to have arbitrary code execution vulnerability in rendering software, and nor has anyone in history ever chained exploits together to achieve a desired outcome?
Oh, wait-
https://security.stackexchange...And chaining vulnerabilities is very common.
-
Re:Re
Have fair-skinned peoples ever been the lower/oppressed class? https://history.stackexchange....
-
Re:Carbon footprint of this?
Here are some references. You can make up your own mind I guess.
"When an ice cube melts in a glass, the overall water level does not change from when the ice is frozen to when it joins the liquid. Doesnâ(TM)t that mean that melting icebergs shouldnâ(TM)t contribute to sea-level rise? Not quite.
Although most of the contributions to sea-level rise come from water and ice moving from land into the ocean, it turns out that the melting of floating ice causes a small amount of sea-level rise, too.
Globally, it doesnâ(TM)t sound like much â" just 0.049 millimetres per year â" but if all the sea ice currently bobbing on the oceans were to melt, it could raise sea level by 4 to 6 centimetres.
Fresh water, of which icebergs are made, is less dense than salty sea water. So while the amount of sea water displaced by the iceberg is equal to its weight, the melted fresh water will take up a slightly larger volume than the displaced salt water. This results in a small increase in the water level."
https://www.newscientist.com/a...
https://physics.stackexchange....
"When you learned about Archimedes back in elementary school, your teacher probably told you that a floating object displaces an amount of water equal to its own weight. Although an ice cube pokes up out of the water, when it melts, the level of the water should stay the same. Extrapolate this concept to an iceberg floating in the oceanâ"a bigger version of the ice cube in your water glassâ"and you would think that melting icebergs shouldn't contribute to sea level rise. Well, you'd be wrong, say geoscientists at the University of Leeds.
In their study, published this week in Geophysical Research Letters, the researchers used satellite observations and a computer model to assess the impacts of melting icebergs. The total amount of floating ice that is turned into ocean water each year is equivalent to 1.5 million Titanic-sized icebergs. Due to differences in the temperature and density of the ice and water (the seawater is warmer and saltier than the icebergs that float in it), when the icebergs melt, the resulting ocean water is 2.6 percent greater in volume than the volume of water that the iceberg had displaced."
https://www.smithsonianmag.com...
"In a paper titled "The Melting of Floating Ice will Raise the Ocean Level" submitted to Geophysical Journal International, Noerdlinger demonstrates that melt water from sea ice and floating ice shelves could add 2.6% more water to the ocean than the water displaced by the ice, or the equivalent of approximately 4 centimeters (1.57 inches) of sea-level rise.
The common misconception that floating ice wonâ(TM)t increase sea level when it melts occurs because the difference in density between fresh water and salt water is not taken into consideration."
http://nsidc.org/news/newsroom...
There are plenty more, but if that doesn't convince you then I imagine nothing will.
-
Re:Out of our control, sure.... but so what?
Can someone please explain to me why artificial intelligence is supposedly somehow any more terrifying than natural intelligence already is when the latter is applied to nefarious ends
Mainly scalability and plasticity.
Imagine the worst human villain ever. You can be quite certain that he'll still be operating on a couple kgs of wetware, very similar to your own, pulling ~20W ( https://psychology.stackexchan... ) tomorrow, next week from now or even a year from now.AI can communicate at speeds approaching the speed of light ( https://en.wikipedia.org/wiki/... ), run in a highly distributed yet coherent fashion, employ GWs of power for computation and have an utterly unknowable way of processing and decision making. Today. In addition to that, given self-changing capabilities, its decision making software and infrastructure can change enormously on very short timespans.
Speaking in evolutionary terms: yeah, humans are pretty smart, but we're also naked apes to a large extent. AI doesn't have that biological legacy holding it back. It is/will be built with all the technological advancements we have made since the stone age. Just compare the communication bandwidth and speed of natural intelligence to that of even a stupid network switch. Hell, we don't even think at speeds anywhere near light speed. Propagation speed in neurons is in the order of tens of meters per second ( https://en.wikipedia.org/wiki/... ). Propagation speed in inorganic communication mediums is 6 orders of magnitude higher.
why it should ever be assumed that any general purpose AI would be somehow likely to have an agenda that we would actually consider to be corrupt or wrong?
Do you think twice about killing mildew? Do you think twice about killing a dog? The question is ultimately whether an extremely advanced AI would regard us as mildew or as dogs. As a nuisance or as something somehow worth keeping around.
That is besides the popular 'goal optimization of military AI going haywire' Hollywoodesque scary scenario, which could indeed happen, but is much less fundamental than the above, imho. -
Re: Yes, they should
Also, your signature is retarded. As illustrated by my own post, intolerance does indeed apply to "persons". I do not tolerate "people" who suggest that they understand things they don't. In other words, I'm intolerant to those who make ignorant statements on political topics while pretending to be knowledgeable.
To add another level to this, a normal American English speaker says "people" ( as illustrated by a bunch of nerds on the subject https://english.stackexchange.... ) and I don't think the British do differently so you just look like a weirdo for that as well.
-
GIYF
-
Re:Should Politics be Separated from Work?
Ignoring the question of how you could stop him from using Linux...
Yes. I'm willing to sacrifice many of my principles to fight NAZIs.
Now onto the real problem.
*Parades 1000 random people in front of you*
Now. Pick out the "nazi".
The response wasn't about modern day white supremacists or neo-Nazis, it was about about actual WWII Nazis. There are people who believe you should follow a moral philosophy even if it leads to an abhorrent outcome. For instance, Kant believed you should always tell the truth even a would-be murderer was asking you for the location of your friend. In modern times this has often been adapted to telling Nazis the location of hiding Jews.
My point is that you shouldn't follow your morals off a cliff. Yes you should keep politics out of your project, but if NAZI Germany, or modern day ISIS, is suddenly using your project to do great harm then you're more than free to try and stop them.
-
The intent was to block an evil maid
Say someone wants to carry a computing device but wants that device to prevent an evil maid with physical access from installing a boot-time rootkit. How would that protection measure work while keeping the owner's control?
-
Re:The headline is missing three words
There's no "fixed" amount of cryptocurrencies either. There are now more cryptocurrencies than currencies. Don't like one? Create a new one.
You misunderstand what was "fixed"
Read this
Your thinking about just switching to another competing coin is the same as saying "I'm going to sell my gold and buy silver instead"