Tuesday, March 1, 2011

How to hack a wifi network in a few minutes

You don't have to be an IT expert to be able to make use of your neighbour's security enabled Wifi network. Just watch one of the dozens of online videos that explains how. Despite most of them being fitted with some kind of password (WEP, WPA etc.), Wifi networks are still relatively vulnerable. And by using another person's network, hackers can illegally download documents or attack websites without being traced.
If pirates should download paedophilic pornography, it's the owner of the home network, the person who pays the monthly wireless fee, who will find himself in court. In France, an anti-piracy law called Hadopi 2 enforces this by making it impossible to sentence a home network owner for having a poorly protected network.
This video, viewed over a million times, shows how, with the aid of software, you can get hold of the password to a wireless network.

Monday, February 28, 2011

So I'm very close to the point of indulging in an SSD. Through My research I have found the OCZ Vertex II to be the most well rounded in most areas. Sandforce drive with Trim, work fine in Raid0 with the latest firmware, pretty decent random write specs. Its looking alright
I will most probably be getting the 360GB version so it will be the slowest of the specs bellow

90-360GB Max Performance
Max Read: up to 285MB/s
Max Write: up to 275MB/s
Sustained Write: up to 250MB/s
Random Write 4KB (Aligned): 50,000 IOPS

For your interest, the 480GB specs:

480GB Max Performance
Max Read: up to 250MB/s
Max Write: up to 215MB/s
Sustained Write: up to 205MB/s
Random Write 4KB (Aligned): 17,500 IOPS

Sennheiser HD 555 to HD 595 Mod

This page will show you how to turn a $199.95 (Canadian – Suggested Retail) pair of Sennheiser HD 555 headphones into a pair of Sennheiser HD 595‘s that cost $349.95. And all you need is a screwdriver.


Instead of designing a completely new product to fit a certain price range, large scale manufacturing dictates that it is often cheaper to simply “cripple” an existing high-end product. This way the manufacturer can use existing molds, parts, assembly lines and training, etc. In electronic products, firmware is usually crippled to omit/hide certain features. For example, digital camera companies reserve functions (like RAW output, exposure and white balance bracketing, long exposures, etc.) for their higher priced cameras, even though their cheapest camera has the same capabilities (See the CHDK project for more info).

Comparing HD555 to HD595

Thanks to the people at head-fi.org, I was able to find someone willing to take apart their expensive HD595 headphones so I could compare them to my moderately priced HD 555 headphones. Here are the photos:

What are the differences?

Aside from the aesthetic differences, the only physical difference was an additional piece of foam inside the cheaper HD555 headphones, blocking about 50% of the outside-facing vents. Since both the HD 555 and HD 595 are designed to be “open” headphones, reducing the vent with this foam would alter the frequency response slightly. So to save yourself $150, open your HD 555′s up and remove the foam. Done.

How to do the mod

The foam cushions are removed simply by pulling on them. From there, use a screwdriver to remove the driver assembly. Once open, remove the black foam stuck onto the back of the outside-facing vents and put everything back together. While you have the foam cushions off, it’s a good time to give them a cleaning (damp cloth).

Is that it?

Yes. The actual sound difference is very slight, but it is noticeable. My guess is that the foam is there only to slightly alter the frequency response of the headphones so that the two models have their own “character” and response curve when tested (some web sites actually graph this as part of their reviews, such as headphone.com). While both headphones sound good, the HD 595′s preserve their more desirable flatter frequency response curve. It’s this flatter frequency response curve that some people are willing to spend the extra money on, and Sennheiser know this.
Quite a few people speculated in my Original thread that the more expensive HD595 headphones must also be using a more expensive driver. However, Head-fi member MCC posted the smoking gun; a picture of the original Sennheiser replacement driver labelled “HD 555 / HD 595″.
6f30dcc7_dscf8567 Contact me if you can help compare other products. Thanks to “Ivant”, “MCC” and others for all their help!