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Hacker Bypasses Windows 7/8 Address Space Layout Randomization

todorb Re:Will not work on 64 bit (208 comments)

when a program asks the OS for memory, the OS assigns a chunk of address space, but doesn't assign memory (physical, virtual, or otherwise) until the program actually tries to use it.

not true. the virtual address space is determined at the time of allocation. otherwise the program won't know where it's allowed to write to. only the physical pages are assigned on actual use (and can be swapped, reassigned, etc).

about 2 years ago

In Theory And Practice, Why Internet-Based Voting Is a Bad Idea

todorb Re:Privacy vs. Accountabilty (218 comments)

very true. the biggest problem with internet voting is not technological at all. the lack of voting booth makes your vote controllable and sellable.

more than 2 years ago

Microsoft 'Trustworthy Computing' Turns 10

todorb using admin account is more secure (185 comments)

Windows users also weren't adjusted to having to work under non-admin account.

by using a non-admin account for the last couple of years i learned that the system is much less secure this way.

on windows the only program that could auto update was google chrome. firefox, flash, thunderbird, java, etc, all required manual update checks (which a non too computer savvy user, like my wife, won't do). firefox actually shows that there's an update available when chacking manually, but requires to be "run as administrator" to actually install it.

same problem for the mac. system update checks won't happen automatically in non-admin accounts.

eventually i got pissed of having to update everything manually and switched my accounts to admin.

about 3 years ago

Godfather of Xen On Why Virtualization Means Everything

todorb Re:OS design fail (150 comments)

well said.

more than 3 years ago

Malaysian Government Offers Free E-mail To All Citizens

todorb Re:Partial (189 comments)

I could use such a mail account for communications with the government.

i suspect that this is exactly the purpose of the government provided email addresses.

more than 2 years ago

Dual-Core Chips Coming To All Smartphones In 2011

todorb Re:iPhone (244 comments)

i know enough about EE, trust me. here are some facts for you and all that declared me wrong:

power is not linear with frequency, electrical current is. this is because current flows through MOS transistors only when they're switching. so more switches cause more current linearly. since power is proportional to the square of current (P=I^2/R), it is also proportional to the square of frequency.

all that argued that power is linear with voltage (which is true) should just have asked themselves how voltage and current relate (hint: linearly).

about 4 years ago

Dual-Core Chips Coming To All Smartphones In 2011

todorb Re:iPhone (244 comments)

two cores on lower clock rate may consume less energy than one core with fast clocking. energy use is proportional to the square of the clock rate, so it's a matter of tuning to achieve lower power. the only question is whether the slow cores will be fast enough for the important sequential tasks (if there are such at all).

about 4 years ago

Software Bug Adds 5K Votes To Election

todorb Re:!bug (239 comments)

when this kind of "error" appears in elections software, be sure that it's not by accident.

more than 5 years ago


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