Contrary to popular assumption, DRAMs used in most modern computers retain their contents for seconds to minutes after power is lost, even at operating temperatures and even if removed from a motherboard. Although DRAMs become less reliable when they are not refreshed, they are not immediately erased, and their contents persist sufficiently for malicious (or forensic) acquisition of usable full-system memory images. This phenomenon limits the ability of an operating system to protect cryptographic key material from an attacker with physical access. Cold reboots can be used to mount attacks on popular disk encryption systems — BitLocker, FileVault, dm-crypt, and TrueCrypt — using no special devices or materials. We experimentally characterise the extent and predictability of memory remanence and report that remanence times can be increased dramatically with simple techniques. New algorithms are available for finding cryptographic keys in memory images and for correcting errors caused by bit decay.

Full research paper [PDF]

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According to Wired the Boeing 787 Dreamliner connected the networks for passenger services to critical flight systems:

The computer network in the Dreamliner’s passenger compartment, designed to give passengers in-flight internet access, is connected to the plane’s control, navigation and communication systems, an FAA report reveals.

Here’s what a Boeing spokesperson had to say:

…it is employing a combination of solutions that involves some physical separation of the networks, known as “air gaps,” and software firewalls. Gunter also mentioned other technical solutions, which she said are proprietary and didn’t want to discuss in public.

Would it really be that much more costly to create 2 networks. One for the important stuff like navigation and control systems, and another completely independent network for passengers to download porn? Networking gear isn’t that expensive. Internet access at 35,000 feet is high latency anyway.

I’m really not so sure I’d feel comfortable knowing that the same network that’s carrying a Rob Schneider movie to the guy in 11F is also carrying packets intended for the horizontal stabilizer.

Maybe I’m just paranoid. After all, I’m not to comfortable with the Airbus A380 apparently running windows in the cockpit.

Hopefully they get it all figured out quickly.

Tired of Windows? The next generation of laptops may let you jump from one operating system to another to play movies, surf the Web or read e-mail. Phoenix Technologies Ltd., a leading maker of the software that controls Windows computers most basic workings, announced this week that it will offer a feature it calls HyperSpace to laptop manufacturers.

Woody Hobbs, the Milpitas, Calif.-based company’s chief executive, said the first application of the technology probably will show up next summer in the shape of laptops that can play DVDs outside Windows.

User will be able to boot in a few seconds straight into the DVD player, skipping the longer Windows startup, or switch to the DVD player from Windows. If Windows is running at the same time, it can be put in sleep mode, prolonging battery life.

Laptops with a media player separate from Windows already exist, but the players don’t run parallel to Windows (you have to boot into the player, then shut it down and boot into Windows to switch tasks).

Laptops with HyperSpace would likely have a separate button that instantly switches away from Windows.

In a second phase, Hobbs sees things like Web browsers, e-mail programs and Web conferencing software like Skype being built into HyperSpace. Computer management functions like antivirus scanning could also be performed outside Windows, improving security, Hobbs said.

The technology would move PCs closer to being appliances - always on and available - and give computer manufacturers a chance to differentiate themselves in what is in many respects a commodity business, by pre-loading different applications.

The HyperSpace environment would be based on Linux, giving the freely distributed operating system what could be its biggest break yet in the struggle to gain traction against Windows on PCs.

Well I’ve finally decided to buy a laptop so I am parting with my beloved desktop.

Amd 2.2ghz,
1.25gb RAM,
80gb & 40gb Hard Drive,
512mb 6800 XT nVidia graphics card,
16x DVD-RW/RAM dual layer drive,
Antec Server/gaming Case with window, dust filters, and easy fit drive bays worth £90,
Hiper PSU,
17″ CRT monitor.

£350

Click here to view the computer on eBay.

I appreciate that using your blog to sell your pc is an all new low - but it’s worth a shot! Hopefully someone puts this on digg! Anyway, buy it.. you know you want to!

AMD has been very tardy with Barcelona. Countless AMD fans have eagerly awaited a new processor. As the day draws closer, TechARP takes a look at the upcoming quad-core AMD Opteron. Is there more to it than just its four processing cores? Will it be the Intel-killer that AMD promised long ago? From the article: ‘AMD is in the same boat as ATI.’ Delays after delays of their long-awaited Barcelona core not only ensured the dominance of their rival, Intel, in the desktop processor market, it also ensured that Intel would be the only choice for those who want a quad-core processor. Although that wait will end in August, 2007 when the Barcelona is finally launched, it remains to be seen if AMD’s new processor will be able to inflict serious damage to Intel’s dominance.