juraj
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Stuck Bitcoin transaction and play with double-spend
A few days ago I was sending my friend a payment of 1.2 BTC. My account had only slightly more than this amount available, not even enough for recommended transaction fee. Instead…
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Spying, liberty, NSA and USA vs. Europe
When I discussed the loss of American liberties with people here in Europe few years ago, my position was simple – we get the same draconian regulations without any opposition or fanfare…
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On darkness: Your fear of death attracts such strange objects
I am widely known for listening to darker genres of music. It makes some people feel I am a complete weirdo (which is true). A few weeks ago I was sitting in…
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Raspberry Pi and Block Erupter on Fidora
My AsicMiner Block Erupter USB miners arrived a few days ago thanks to Andreas and people from Bitcoin Austria who processed the order and the chief Bitcoin economist Peter Šurda who drove…
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Are we going to be slaves of algorithms?
Server idnes.cz published an interview with Josef Šlerka, an expert on new media (translation by Google Translate). He warns that we can become slaves to algorithms that we do not understand. This…
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Experiments with ZRTP and FreeSwitch
ZRTP is very important project for securing your voice communication. I started playing with Jitsi, Acrobits Softphone and FreeSWITCH. What I found out after initial configuration of ZRTP for FreeSwitch is that…
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Moral reform by Ztohoven: An ultimate hack
Almost nobody would guess that the speech of Czech MP David Rath would start a moral reform in the country. Rath was arrested and charged with receiving bribes in May 2012. He…
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Backing up your github repositories
I put a lot of my free software to Github lately. Github is nice, it allows community forks and other great things. But what if it is gone? For that, we have…
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Report from 29c3
Chaos Communication Congress (CCC or C3 for short) is traditionally held between Christmas and New Year. This date is chosen not only because most hackers are free during this time, but also…