フルスクリーンモードで見るためにここにかちりと鳴らしなさい

暗号鍵を取り出すためにハッカーが容易にコンピュータの記憶をいかにの凍らせることができるか素晴らしい例はここにある。

概要 普及した仮定、ほとんどの現代コンピュータで使用される実用温度でそして取除かれてマザーボードからドラムへの反対は力が失われた後秒に分のための内容を、保っても。 新たにならないときドラムがより少なく信頼できるようになるが、すぐに消されないし、内容は使用可能な完全システムメモリイメージの悪意のある(か法廷の)獲得のために十分に主張する。 私達は物理アクセスを用いる攻撃者から暗号の主な材料を保護するこの現象がオペレーティングシステムの機能を限ることを示す。 私達は-特別な装置か材料を使用して…冷たいの攻撃を普及したディスク暗号化システム- BitLocker、FileVault、dmクリプト、およびTrueCrypt取付けるのに再起動を使用しない。 私達は実験的に記憶remanenceの範囲そして予測可能性を特徴付け、remanenceの時間が簡単な技術と劇的に増加することができることを報告する。 私達はメモリイメージの暗号のキーを見つけるとビット崩壊現象によって引き起こされる間違いを訂正するための新しいアルゴリズムを提供する。 私達が部分的にこれらの危険を軽減するための複数の作戦を論議するけれども、私達はそれらを除去する簡単な治療の知っていない。

を経て hacknmod, 刻み目のページ

Drink a lot of beer in the bottles and have too much recycling every week?

Don’t worry, you can turn your empty beer bottles into powerful solar-powered LED beer lanterns that will light up your house at night for free.

Al Gore and company have helped us to see that our planet is in peril. Lend a hand, make a toast, and help illuminate ways for saving Earth ― all at the same time! It’s easy to do your part: recycle, refill, and recharge. Just take your fave beverage bottle (keep the cap), drop in a flexible solar panel, a step-up switching regulator circuit, a rechargeable battery pack, and a powerful LED, cap it, and you’ll have a self-sufficient garden lantern that is ideal for shedding some light on solving environmental issues. You will have to choose your bottle carefully, though. Clear glass rules. Also, wide-mouth bottles are easier to convert than narrow opening long-neckers. Like your grandfather who built ships in discarded bottles, put a modern spin on bottle building while being conscientious of your world. Cheers!

via popsci

When did Ctrl+Alt+Del phenomenon start?  Well, it probably goes back to the days of DOS operating system but Windows made it practical and famous with its blue screens of death.

These Control Alt Delete Cups will let you free yourself from stress by drinking the keys, not punching or hitting them with your fists.  (I have to admit that on many occasions using Windows 95 and 2000, I did punch out couple of Control, Alt, and Delete keys.)

via technabob

You know when it comes to New Years and Independence Day, you always get to see some really exotic, beautiful fireworks.  Well, all those fireworks are nowdays controlled by an ignition control system but here’s how to make one for yourself.

At the heart of my firework ignition system is an SX48 running at 50 MHz. I was able to make full use of the SX’s 36 IO pins. Thirty lines are dedicated to the 30 channels. Two lines connect to a MAX233 chip for serial port control. Another line is connected to a 7805 (TO-92) which monitors the state of the arming key. The remaining 3 lines are used to communicate with the PIC A/D converter via an SPI interface. The system was built with cost as an important factor. At $10 the SX48 Proto board was an easy choice with its incorporated 5V regulator, led and all the difficult surface mount soldering already done for me. I also designed 2 pc boards using the freeware version of Cadsoft’s Eagle. The interface board connects the SX48 Proto board and contains the MAX233 chip, A/D converter and 30 LEDs to represent the state of each of the 30 channels.

via hackedgadgets, DIY Page

You know those telepromopters that TV news reporters use to read their daily news?  Well, here’s a simply way to make a teleprompter for any type of presentations.  (This one is an example for a church but I don’t see any reasons why you wouldn’t use it outside god’s house.)

1. Whatever you do…. no matter what…. and this is job #1 so pay attention…. always have a paper copy of your notes in your suit pocket.     Allow me to repeat myself ― Have paper backup of your talk.    To sum up this point:  Make sure you have your notes on paper, and easily accessible in case your computer dies.
2. Write your talk, refine it and get it to the point where you would normally print it out as notes. In my case I work from a hybrid of a bullet point outline & written-out quotations.
3. Enter those notes,  page by page into a power point presentation.   Use huge font, as it is irrelevant how many slides/pages you use.
4. Get a “wireless presenter”    You plug a small receiver into any USB port, then hold the tiny clicker in your hand.  My clicker is 1-1/2 inch across, 3-1/2 inches long and about 1/2 inch thick.  It fits easily, and unobtrusively into your hand.   No one will even notice it.

via ldsym

Here’s a cool set of DIY colo-changing LED coasters.  Basically, it runs on solar power, LEDs light up in red for hot drinks and blue for cold drinks.

Looks pretty simple to make, maybe a good idea for your next circuits projects.

Smart Coasters are cast-plastic coasters for your drink that light up red when you put a hot drink on top and light up blue with a cold drink. The design is fully analog– no microcontrollers and no programming– and they incorporate a solar cell so that the whole thing is hermetically sealed: waterproof and washable. Complete step-by-step DIY instructions are included for both the electronics and the resin casting.

via evilmadscientist, hungryscientist

Remember I did a quick post on how to write a load-balancing script (or bandwidth throttling)?

Well, today I found another cool script for limiting bandwidth.  I believe this one if more complicated but if you need it, it might be greatly helpful.

Here’s the code via Adamsinfo.com:


# Set some variables
#!/bin/bash
EXT_IFACE=”eth0″
INT_IFACE=”eth1″
TC=”tc”
UNITS=”kbit”
LINE=”10000″ #maximum ext link speed
LIMIT=”5000″ #maximum that we’ll allow

Continue reading ‘Linux Server Hack - How to Limit Bandwidth with Linux, TC, and iproute2!’

I remember first hearing about Linus Travolds back in the early 90s and I thought Linux was going to be a hit in year 2000.

Well, it turns out I was right, just about 10 years early.  You have to admit, Linux is really taking over the world right now with web servers (including this one) and Eee PCs and other laptops that come loaded with Linux.

Anyways, I don’t want to bore my readers, here’s the 15 Great Quotes from the Linus Travolds and Stallman:

1. “To be able to choose between proprietary software packages is to be able to choose your master. Freedom means not having a master. And in the area of computing, freedom means not using proprietary software.”
-Richard M. Stallman

2. “Software is like sex: it’s better when it’s free.”
-Linus Torvalds

3. “Value your freedom or you will lose it, teaches history. ‘Don’t bother us with politics’, respond those who don’t want to learn.”
-Richard M. Stallman

4. “Software patents are a huge potential threat to the ability of people to work together on open source. Making it easier for companies and communities that have patents to make those patents available in a common pool for people to use is one way to try to help developers deal with the threat.”
-Linus Torvalds

5. “If programmers deserve to be rewarded for creating innovative programs, by the same token they deserve to be punished if they restrict the use of these programs.”
-Richard M. Stallman

6. “One of the questions I’ve always hated answering is how do people make money in open source. And I think that Caldera and Red Hat ― and there are a number of other Linux companies going public ― basically show that yes, you can actually make money in the open-source area.”
-Linus Torvalds

7. “Control over the use of one’s ideas really constitutes control over other people’s lives; and it is usually used to make their lives more difficult.”
-Richard M. Stallman

8. “It just makes it even harder for people to even approach the (open source) side, when they then end up having to worry about … public humiliation.”
-Linus Torvalds

9. “I founded the free software movement, a movement for freedom to cooperate. Open source was a reaction against our idealism. We are still here and the open-source people have not wiped us out.”
-Richard M. Stallman

10. “When it comes to software, I much prefer free software, because I have very seldom seen a program that has worked well enough for my needs, and having sources available can be a life-saver.”
-Linus Torvalds

11. “If you focus your mind on the freedom and community that you can build by staying firm, you will find the strength to do it.”
-Richard M. Stallman

12. “Anybody who tells me I can’t use a program because it’s not open source, go suck on rms. I’m not interested. 99% of that I run tends to be open source, but that’s _my_ choice, dammit.”
-Linus Torvalds

13. “’Free software’ is a matter of liberty, not price. To understand the concept, you should think of ‘free’ as in ‘free speech,’ not as in ‘free beer’.”
-Richard M. Stallman

14. “I’m doing a free operating system just a hobby, won’t be big and professional like gnu for 386 (486) AT clones.”
-Linus Torvalds

15. “Once GNU is written, everyone will be able to obtain good system software free, just like air.”
-Richard M. Stallman

via junauza

While this might not seem like big news, gamers will love the fact that Dell’s new laptop will feature a Quad-core Processor with 16GB of memory.

This new Dell Precision laptop will be available later this fall, keep saving up that piggy bank money until then gamers.

We heard you. Welcome to our slick new concept for the ultimate Dell Precision mobile workstation, destined to be one of the first of its kind and the envy of all those who thought they had a powerful and cool notebook.

Fully configurable, streamlined and gorgeous. Just think of the options:

Dual-core? No, YOU WANT quad-core processing power. 8GB memory limitation? Forget that, YOU WANT more. Storage. A few hundred Gig? YOU WANT a Terabyte and RAID. 17″ screen? Yes, but YOU WANT 100% Adobe color gamut RGBLED. 512MB of dedicated graphics memory? No, YOU WANT more.

via engadget,