Surely the only way devices brought from home to get on via the school network would be through your proxy. If their on the phone network, you're screwed either way!
Correct, but if they are using https through your proxy it greatly limits what you can do without giving them a man in the middle warning every time they hit a site. If someone else provides a computer for me to use and says "by the way, we will intercept every https query you make", then that's fine - it's their computer and their network and I can take it or leave it. If someone says "install this certificate on your ipad/iphone/laptop/whatever" then i'm definitely not playing.
Best way to stop them looking at inappropriate content is don't set up a filter, but keep a record of every website they visit and who visited it. Tell the students you are doing this.
That's about the best you are going to get. And if they are all your own computers you can filter https too (although you have to make sure kids won't be doing any banking etc or there might be liability issues), but it's harder if you want to filter devices that people bring from home.
If you filter, and a poor innocent child captures glimpse of a nipple and is scarred for life, you'll have to explain to the concerned parents why you allowed this to happen. If you allow all content then you have less responsibility for this, in theory.
What gets into the real reason nobody did it yet (and NASA didn't protect against it). What gain can there be in hacking Curiosity?
Another thing of course is to sell it to the Russians or the Chinese. Why take the risk of spending billions on a rocket and a rover that might not make it when you can just pay some to steal it for you once it's there. In fact if any of the parts are made in China then the hacking was probably done before it even launched;)
What gets into the real reason nobody did it yet (and NASA didn't protect against it). What gain can there be in hacking Curiosity?
You're kidding right? There are various loony factions that strongly believe that NASA is in talks with the Martians and is deliberately withholding information. Taking control of the Curiosity rover would allow them to find the Martians themselves and really stick it to The Man.
Of course us sane people know that the best way to hack the Curiosity rover is to break into Area 51 and load it into a truck.
Because cameras with enough resolution to reliably read license plates in the field are a heck of a lot more expensive than single-channel radios. I can build a receiver that can do the job for under $20 in mass production. I know because I've done it.
Are the cameras more expensive than a million $20 transponders though? What about 10 million?
The other thing I didn't mention is that they already have the cameras set up to catch infringers, and out-of-towners are allowed to get a "day pass" for their occasional trip to the city, which doesn't require a transponder. If your transponder doesn't respond (eg you left it in the glove box or in another car) then the number plate recognition ensures that you still get billed, plus an extra $1 per toll point for the convenience.
Why should they have batteries? Passive transponders fill the bill.
I'm not sure about the proposed rfid devices in Brazil. The ones we use in Australia (called e-Tag) also beep (one beep = okay, two beeps = funds low, etc) which requires a battery. An active transponder is much more likely to reliably transmit a signal back from the distance required too (our readers are a significant distance above the road to allow for high vehicles etc), with multiple vehicles being scanned at once.
If in Brazil they are using handheld readers that work at close range then yes, batteries would not be required.
IMHO, even in Australia having to have an e-Tag seems kind of stupid. Pretty much everyone has a cell phone, and number plate rules are fairly strict in terms of policing obscured number plates, so why not just read number plates and send an SMS if funds on the account are low. I'm sure you'll get the occasional person who has cleverly obscured their number plate from the camera angles used, but then those people wouldn't have an e-Tag anyway.
we have tollway rfid devices in Australia that sit pretty much in the hottest part of the cabin, and they do just fine for the lifetime of the battery (~5-10 years). Are you seriously suggesting that they haven't thought of this??
I don't know anything about hard drive components, but surely there are more critical parts to a hard drive than the platters, and parts that can't handle 1000+ degrees Fahrenheit? IC packaging? Wire insulation? Something?
Rated non-operating temperature of a seagate drive in a manual I just looked at said -40C to 70C. Draw your own conclusions about the drives ability to withstand 230C from that:)
Physically? Yes. Floppy discs, no, DVDs, no, but hard drives, yes. Aluminum or glass platters melt a 1200-1500 degrees Fahrenheit.
The data, on the other hand, might suffer significant damage because of the superparamagnetic effect, depending on what type of magnetic material is involved and possibly on whether the drive is based on perpendicular storage. Or it might be completely unaffected. Hard to say.
The value of the harddisk in the OP's case is the data on it, any speculation about anything else is rather pointless.
Your oven should go up to 451F/230C, crank it up and put an old harddisk in there. I think it would be valid to raise the temperature up slowly to simulate the target environment (fire safe's have a high amount of thermal mass), leave it in there for 10 minutes at 451F/230C and see if it works afterwards.
A seagate manual I just flicked through said that the nonoperating temperature is -40C to 70C... well below the 230C you are saying the drive might survive, even physically.
Are you REALLY sure that you want to use USB HDDs? The cost savings of using a box of HDDs may well be offset by the hassle in finding the backup software, the manual labor of swapping them, finding the correct drive to retrieve a certain file, etc.
How about a pair of Synology DS1512+ NASes? In addition to getting all of the storage online at all times, you get RAID support, etc.
No reason why they can't all be attached at once. with 3TB disks, and 8 USB3 ports, you'ld only need to plug them all in to do the backup then remove them all to take them offsite when the backup is done.
A few portable NAS's holding 4 disks each might be a better option, but don't exclude USB for its simplicity.
If the OP's porn collection can be logically broken up at some level, eg:
/porn/blonde /porn/brunette /porn/redhead
then the backup software could create one job for each directory, and multiple USB disks could be attached at once giving increased throughput. USB3 also increases speed to the point where the 7200RPM disk itself will become the bottleneck.
So at 100MB/second per disk write speed with 4 disks going at once (assuming the source disks are capable of this supplying this volume of data and there are no other throughput limitations), you could do it in 16 hours, or 24 hours with more realistic margins.
If it turns out that the source data is not porn (unlikely) and is highly compressible, then it could be done in far less time.
Just about every time I try to buy clothes I walk away thinking about how they used to predict that in the future (that is, by now) we'd stand in front of a big screen that projected an image of us, we'd be able to fiddle with some knobs to pick clothing, see how it would look on us, and it would get custom-made to not just fit perfectly but also in whatever fabric, color, style, etc. we wanted. Note to the folks who make 3D printers, make one that does fabric.
There are millions of other websites. I normally close the page and no more visit the website if it tries to bully me (force me to disable AdBlock or force me to register before I can see the article...)
It hardly counts as a bullying tactic - if you refuse to pay the cover charge (eg watch a few ads) then you shouldn't be allowed in.
If a site asks me to turn off ad block or register (for a service I don't want to register for) then like you, I just go somewhere else, but I don't go around claiming they are bullying me.
And what about your right not to have books that you have legally bought and paid for effectively stolen back from you by the retailer? Does that only apply to the "world of physical things" too?
They are revoking your right to access it, not 'stealing' it back. You didn't buy it (how can you buy information???), you bought the right to access it. It turns out Amazon didn't have the right to sell you in the first place, which also invalidated the purchase you made from them. AFAIK they refunded the purchase price anyway so if you want to draw a parallel with the physical world it's more like someone selling you a stolen car then the original owner taking it back from you, with the added bonus that actually get your money back.
The problem is that the content owners have invented the artificial concept of your right to access something so they can derive a revenue from their work, and then the resellers use that concept to try and also make money for themselves.
If you don't like it, don't buy it. There is more literature printed in books than you'll ever have time to read in your lifetime, even if you exclude the stuff you aren't interested in, so it's not like this choice is being forced upon you.
Another vindication for technological progress, and another steely blow to the right of first sale.
No. The idea of first sale belongs to the world of physical things, and the physical world is slowly learning to adjust to what that means. Stop trying to apply physical laws to information.
Hubbard likely never thought he could predict the future, but his followers certainly thought he could do that and more. Of course, they believe that Scientology can make the gay go away too.
Maybe. He wouldn't be the first spiritual leader to start believing his own lies though.
No serious science fiction writer in their right mind seriously thinks they can accurately predict the future. The good science fiction writers merely use the future to explore the issues of the present and their implications (and perhaps offer admonishment, with a glimpse of what could go wrong if a particular path is followed).
I didn't get the impression that any of them seriously thought their predictions might be correct, but it's still an interesting read.
Curiously, in an article containing L. Ron Hubbard, your sig was the first mention of scientology!
Telemetry will be continuously relayed back to earth, true, but with not much less than about a 15 minute latency, owing to the fact that Mars roughly a quarter of a light-hour from earth right now.
So you'll be sitting in the crowd watching one direction (or whatever you kids are into these days) complaining that you should be closer to the front because the light from the stage is taking multiple nanoseconds to reach you, which is unacceptable because you paid full price for a live performance.
I haven't read TFA but I assumed it was about ARM, in which case solution #4 is "buy x86". If TFA is about x86 then the author is an idiot. An article about how this could be the start of a slippery slope might be better, but unless something has changed since I last read the MS literature, disabling secure boot is an easy solution.
And given how easy rooting an Apple phone has been, I can't imagine that rooting UEFI will be any more difficult.
I wonder...can they detect glass blades? Especially if the blade is inserted in a matching counterpart so that the overall shape on an X-ray resembles an innocuous solid cuboid or something like that?
If not exactly that, there are many other ways you could get a weapon on board that makes X-ray detectors only useful for catching people who accidentally left something dangerous in their carry-on luggage, like a bottle of water.
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Surely the only way devices brought from home to get on via the school network would be through your proxy. If their on the phone network, you're screwed either way!
Correct, but if they are using https through your proxy it greatly limits what you can do without giving them a man in the middle warning every time they hit a site. If someone else provides a computer for me to use and says "by the way, we will intercept every https query you make", then that's fine - it's their computer and their network and I can take it or leave it. If someone says "install this certificate on your ipad/iphone/laptop/whatever" then i'm definitely not playing.
Best way to stop them looking at inappropriate content is don't set up a filter, but keep a record of every website they visit and who visited it. Tell the students you are doing this.
That's about the best you are going to get. And if they are all your own computers you can filter https too (although you have to make sure kids won't be doing any banking etc or there might be liability issues), but it's harder if you want to filter devices that people bring from home.
If you filter, and a poor innocent child captures glimpse of a nipple and is scarred for life, you'll have to explain to the concerned parents why you allowed this to happen. If you allow all content then you have less responsibility for this, in theory.
What gets into the real reason nobody did it yet (and NASA didn't protect against it). What gain can there be in hacking Curiosity?
Another thing of course is to sell it to the Russians or the Chinese. Why take the risk of spending billions on a rocket and a rover that might not make it when you can just pay some to steal it for you once it's there. In fact if any of the parts are made in China then the hacking was probably done before it even launched ;)
What gets into the real reason nobody did it yet (and NASA didn't protect against it). What gain can there be in hacking Curiosity?
You're kidding right? There are various loony factions that strongly believe that NASA is in talks with the Martians and is deliberately withholding information. Taking control of the Curiosity rover would allow them to find the Martians themselves and really stick it to The Man.
Of course us sane people know that the best way to hack the Curiosity rover is to break into Area 51 and load it into a truck.
http://en.wikipedia.org/wiki/Wikipedia:Don't_stuff_beans_up_your_nose
And further down there is http://en.wikipedia.org/wiki/Wikipedia:Do_not_disrupt_Wikipedia_to_illustrate_a_point... i'd never thought of doing that before.
Because cameras with enough resolution to reliably read license plates in the field are a heck of a lot more expensive than single-channel radios. I can build a receiver that can do the job for under $20 in mass production. I know because I've done it.
Are the cameras more expensive than a million $20 transponders though? What about 10 million?
The other thing I didn't mention is that they already have the cameras set up to catch infringers, and out-of-towners are allowed to get a "day pass" for their occasional trip to the city, which doesn't require a transponder. If your transponder doesn't respond (eg you left it in the glove box or in another car) then the number plate recognition ensures that you still get billed, plus an extra $1 per toll point for the convenience.
Why should they have batteries? Passive transponders fill the bill.
I'm not sure about the proposed rfid devices in Brazil. The ones we use in Australia (called e-Tag) also beep (one beep = okay, two beeps = funds low, etc) which requires a battery. An active transponder is much more likely to reliably transmit a signal back from the distance required too (our readers are a significant distance above the road to allow for high vehicles etc), with multiple vehicles being scanned at once.
If in Brazil they are using handheld readers that work at close range then yes, batteries would not be required.
IMHO, even in Australia having to have an e-Tag seems kind of stupid. Pretty much everyone has a cell phone, and number plate rules are fairly strict in terms of policing obscured number plates, so why not just read number plates and send an SMS if funds on the account are low. I'm sure you'll get the occasional person who has cleverly obscured their number plate from the camera angles used, but then those people wouldn't have an e-Tag anyway.
we have tollway rfid devices in Australia that sit pretty much in the hottest part of the cabin, and they do just fine for the lifetime of the battery (~5-10 years). Are you seriously suggesting that they haven't thought of this??
I did wonder. Since giving up caffeine my sarcasm detection has been a bit hit and miss in the mornings :)
I don't know anything about hard drive components, but surely there are more critical parts to a hard drive than the platters, and parts that can't handle 1000+ degrees Fahrenheit? IC packaging? Wire insulation? Something?
Rated non-operating temperature of a seagate drive in a manual I just looked at said -40C to 70C. Draw your own conclusions about the drives ability to withstand 230C from that :)
Physically? Yes. Floppy discs, no, DVDs, no, but hard drives, yes. Aluminum or glass platters melt a 1200-1500 degrees Fahrenheit.
The data, on the other hand, might suffer significant damage because of the superparamagnetic effect, depending on what type of magnetic material is involved and possibly on whether the drive is based on perpendicular storage. Or it might be completely unaffected. Hard to say.
The value of the harddisk in the OP's case is the data on it, any speculation about anything else is rather pointless.
Your oven should go up to 451F/230C, crank it up and put an old harddisk in there. I think it would be valid to raise the temperature up slowly to simulate the target environment (fire safe's have a high amount of thermal mass), leave it in there for 10 minutes at 451F/230C and see if it works afterwards.
A seagate manual I just flicked through said that the nonoperating temperature is -40C to 70C... well below the 230C you are saying the drive might survive, even physically.
Are you REALLY sure that you want to use USB HDDs? The cost savings of using a box of HDDs may well be offset by the hassle in finding the backup software, the manual labor of swapping them, finding the correct drive to retrieve a certain file, etc.
How about a pair of Synology DS1512+ NASes? In addition to getting all of the storage online at all times, you get RAID support, etc.
No reason why they can't all be attached at once. with 3TB disks, and 8 USB3 ports, you'ld only need to plug them all in to do the backup then remove them all to take them offsite when the backup is done.
A few portable NAS's holding 4 disks each might be a better option, but don't exclude USB for its simplicity.
If the OP's porn collection can be logically broken up at some level, eg:
then the backup software could create one job for each directory, and multiple USB disks could be attached at once giving increased throughput. USB3 also increases speed to the point where the 7200RPM disk itself will become the bottleneck.
So at 100MB/second per disk write speed with 4 disks going at once (assuming the source disks are capable of this supplying this volume of data and there are no other throughput limitations), you could do it in 16 hours, or 24 hours with more realistic margins.
If it turns out that the source data is not porn (unlikely) and is highly compressible, then it could be done in far less time.
Bacula can do all of this.
Just about every time I try to buy clothes I walk away thinking about how they used to predict that in the future (that is, by now) we'd stand in front of a big screen that projected an image of us, we'd be able to fiddle with some knobs to pick clothing, see how it would look on us, and it would get custom-made to not just fit perfectly but also in whatever fabric, color, style, etc. we wanted. Note to the folks who make 3D printers, make one that does fabric.
Sweat shop slave labour is cheaper.
There are millions of other websites. I normally close the page and no more visit the website if it tries to bully me (force me to disable AdBlock or force me to register before I can see the article ...)
It hardly counts as a bullying tactic - if you refuse to pay the cover charge (eg watch a few ads) then you shouldn't be allowed in.
If a site asks me to turn off ad block or register (for a service I don't want to register for) then like you, I just go somewhere else, but I don't go around claiming they are bullying me.
This website is incompatible with the Do Not Track feature of your browser. Please disable the feature and hit refresh to try again.
And what about your right not to have books that you have legally bought and paid for effectively stolen back from you by the retailer? Does that only apply to the "world of physical things" too?
They are revoking your right to access it, not 'stealing' it back. You didn't buy it (how can you buy information???), you bought the right to access it. It turns out Amazon didn't have the right to sell you in the first place, which also invalidated the purchase you made from them. AFAIK they refunded the purchase price anyway so if you want to draw a parallel with the physical world it's more like someone selling you a stolen car then the original owner taking it back from you, with the added bonus that actually get your money back.
The problem is that the content owners have invented the artificial concept of your right to access something so they can derive a revenue from their work, and then the resellers use that concept to try and also make money for themselves.
If you don't like it, don't buy it. There is more literature printed in books than you'll ever have time to read in your lifetime, even if you exclude the stuff you aren't interested in, so it's not like this choice is being forced upon you.
Can we get our rights back, please?
Another vindication for technological progress, and another steely blow to the right of first sale.
No. The idea of first sale belongs to the world of physical things, and the physical world is slowly learning to adjust to what that means. Stop trying to apply physical laws to information.
Now get off your lawn!
Hubbard likely never thought he could predict the future, but his followers certainly thought he could do that and more. Of course, they believe that Scientology can make the gay go away too.
Maybe. He wouldn't be the first spiritual leader to start believing his own lies though.
No serious science fiction writer in their right mind seriously thinks they can accurately predict the future. The good science fiction writers merely use the future to explore the issues of the present and their implications (and perhaps offer admonishment, with a glimpse of what could go wrong if a particular path is followed).
I didn't get the impression that any of them seriously thought their predictions might be correct, but it's still an interesting read.
Curiously, in an article containing L. Ron Hubbard, your sig was the first mention of scientology!
Message from Curiosity: Landed safely. Initiating primary directive - kill cats.
Telemetry will be continuously relayed back to earth, true, but with not much less than about a 15 minute latency, owing to the fact that Mars roughly a quarter of a light-hour from earth right now.
So you'll be sitting in the crowd watching one direction (or whatever you kids are into these days) complaining that you should be closer to the front because the light from the stage is taking multiple nanoseconds to reach you, which is unacceptable because you paid full price for a live performance.
I was almost MURDERED by a gas attack from a passenger sitting next to me once. Was some bad chili, he claimed.
So in order to ensure safety, we now need to an x-ray, a pat-down, and a big squeeze to determine if the passenger is holding any weapons?
I haven't read TFA but I assumed it was about ARM, in which case solution #4 is "buy x86". If TFA is about x86 then the author is an idiot. An article about how this could be the start of a slippery slope might be better, but unless something has changed since I last read the MS literature, disabling secure boot is an easy solution.
And given how easy rooting an Apple phone has been, I can't imagine that rooting UEFI will be any more difficult.
I wonder...can they detect glass blades? Especially if the blade is inserted in a matching counterpart so that the overall shape on an X-ray resembles an innocuous solid cuboid or something like that?
If not exactly that, there are many other ways you could get a weapon on board that makes X-ray detectors only useful for catching people who accidentally left something dangerous in their carry-on luggage, like a bottle of water.