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[FOX]Hackers Decrypt Computer by Freezing Memory Chips - Page 3

post #21 of 31
So in other words we need something like the hard drive overwrite programs, but for RAM... doing the entire process on shutdown like 4 times will only add, at most, second to shutdown, considering minimum write speeds of 6000MB/s and 2GB RAM :x
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post #22 of 31
Quote:
Originally Posted by Coma View Post
So in other words we need something like the hard drive overwrite programs, but for RAM... doing the entire process on shutdown like 4 times will only add, at most, second to shutdown, considering minimum write speeds of 6000MB/s and 2GB RAM :x
Just run MemTest86 on shutdown.
Once again...
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post #23 of 31
Quote:
Originally Posted by DuckieHo View Post
Read
A couple of those things weren't engineer's mistakes, but those of the brass. Besides, those types of engineers are loaded. I am referring to Civils specifically as getting the short end of the stick despite being the most important because of the public's ability to only complain about things but not actually pay to make them not happen.

Funny nonetheless.
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post #24 of 31
I think there is a resolution...
You can store in L2 cache the password for encrypting/decrypting the memory (RAM), and the RAM contains the password for the HDD encryption/decryption.
Off course it is a huge performance hit, but for the security.... (I'm not talking about 60% performance hit, I'm talking about 10 times decrease and even more.)
I don't know if L2 is voluntary memory, but in that case you will need to freeze even the CPU, and if you reset (reboot) it it will clear the L2 , so you're not getting anything
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post #25 of 31
I remember hearing from one of my E.E. professors last semester about research he did in the 70's with the same type of thing, where they would load stuff into the DRAM and then freeze it and swap it into a different machine. I never thought about it as a security risk, though.

Quote:
Originally Posted by stargate125645 View Post
Even so, promoting paranoia does not make people safer. Just like with the whole bridge collapse thing in Minnesota. If people want better infrastructure, pony over more money! Civil engineers get screwed salary-wise because we serve the public and the public doesn't want to invest money.
Maybe civil engineers just make less because they have an easier skill set, thus turning out more graduates with C.E. degrees. More workers in the market lowers the salary for that job. Also, I wouldn't say the civil engineers for the Burj Dubai are really serving the public.
Just something to think about from your friendly neighborhood electrical engineering student.
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post #26 of 31
Wow. I read about freezing chips a long time ago, and asked one of my professors if one could retrieve session information from them after-the-fact.... he told me "no", guess he didn't know what he was talking about.
post #27 of 31
Quote:
Originally Posted by ted View Post
I remember hearing from one of my E.E. professors last semester about research he did in the 70's with the same type of thing, where they would load stuff into the DRAM and then freeze it and swap it into a different machine. I never thought about it as a security risk, though.



Maybe civil engineers just make less because they have an easier skill set, thus turning out more graduates with C.E. degrees. More workers in the market lowers the salary for that job. Also, I wouldn't say the civil engineers for the Burj Dubai are really serving the public.
Just something to think about from your friendly neighborhood electrical engineering student.
You use an example of a corrupt government half-way across the world to try to make your point about something in the United States, and you claim that civil engineers have an easier skill set. Clearly your skill set is doing you well!

Aside from the fact that civils are the only engineers that are required to pass licensure exams at all - let alone twice, we are also required to undergo continuing education to keep licensure. That first exam (required to be passed for any meaningful job) must also be taken right out of school and includes every subject taught in engineering school such as thermodynamics, dynamics, and electrical circuits, as useless as they may be for us. In other words, not only are we required to be well-rounded but we are required to be specialists in what we do need to know. As if that weren't enough, we also have to deal with the public. A public, which much like yourself apparently, doesn't understand how things work. By simply designing one structure, civil engineers are responsible for potentially hundreds of thousands of lives per day. Considering how many structures an engineer will design in his/her lifetime. That dwarfs any sort of responsibility you will probably ever face. If we make one mistake, our career is over.

So go ahead. Tell me I have an easier skill set. Tell me that is why I make less money. It will mean nothing, because clearly your comprehension of reality is about as complete as that of a kindergartener.
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post #28 of 31
Quote:
Originally Posted by stargate125645 View Post
You use an example of a corrupt government half-way across the world to try to make your point about something in the United States, and you claim that civil engineers have an easier skill set. Clearly your skill set is doing you well!

Aside from the fact that civils are the only engineers that are required to pass licensure exams at all - let alone twice, we are also required to undergo continuing education to keep licensure. That first exam (required to be passed for any meaningful job) must also be taken right out of school and includes every subject taught in engineering school such as thermodynamics, dynamics, and electrical circuits, as useless as they may be for us. In other words, not only are we required to be well-rounded but we are required to be specialists in what we do need to know. As if that weren't enough, we also have to deal with the public. A public, which much like yourself apparently, doesn't understand how things work. By simply designing one structure, civil engineers are responsible for potentially hundreds of thousands of lives per day. Considering how many structures an engineer will design in his/her lifetime. That dwarfs any sort of responsibility you will probably ever face. If we make one mistake, our career is over.

So go ahead. Tell me I have an easier skill set. Tell me that is why I make less money. It will mean nothing, because clearly your comprehension of reality is about as complete as that of a kindergartener.
Civil engineers have it tough... long hours and heavy reponsibility with little pay or recognition...

If you really want the $$, go with network design and engineering... just need a few certs on top of your core to make six figures a year (A+, N+, Linux+, MCP, CWNA/CCNA > CCNP).
post #29 of 31
Quote:
Originally Posted by ted View Post
I remember hearing from one of my E.E. professors last semester about research he did in the 70's with the same type of thing, where they would load stuff into the DRAM and then freeze it and swap it into a different machine. I never thought about it as a security risk, though.
...
Core memory for the win.

Used to work on a Perkin Elmer system (dating myself...) that used core memory. If I had to troubleshoot a system off-site, I would load the diagnostics program into the HUGE 64k core memory board, pack it up and take it to the site with issues. The charge on the core memory board took many months to even start to dissipate...
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post #30 of 31
I wouldn't say that "hackers" did this (title of thread).... Princeton did it; your average hacker is not Ivy-league material.....
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