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Need help understanding your gigabytes of application logs or network captures? Your OS performance metrics do not make sense? Then DAVIX, the live CD for visualizing IT data, is your answer! To simplify the analysis of vast amounts of security data, visualization is slowly penetrating the security community. There are many free tools available for analysis and visualization of data. To simplify the use of these tools, the open source ....
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Zac Franken: Is that a unique credential in your pocket or are you just happy to see me?
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www.defcon.org
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19 years ago
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eng
This year new shiny toys are abound, as I'll tell you about the credentials in your wallet, and even in you. How secure (or not) they are and a few ways to duplicate / replicate /emulate them. Last year at Defcon 15 I had a bit of a chat with you guys and gave you an overview of access control systems, told you of their common flaw, and showed you some cool toys that exploit it. This year, from the humble magnetic stripe card to the mo....
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Today’s trip was like taken directly out of the lonely planet guidebook. Our guide Said Azawi (todo: double check last name) picked us up at the hotel at the appointed time. Driving over Gezira, past the Cairo Opera house and into Giza we arrived at the pyramids at the Giza Plateau early. We were a bit suspicious about the whole deal, but the guide recommended we get horses or camels to take us across the plateau.
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The “kobyuutr” on which I am writing this has an arab/english keyboard, so I will write in english) We arrived late at night at Cairo international airport, and got a first impression of Egyptian bureaucracy that has remained. We ended up standing in lines for a long time, and when we finally were through, it was 2 am, and we did not feel like dealing with Cairo’s infamous taxis. So we took a “limosin service” to the hotel.
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I am happy to see others express positive opinions about universal DAO interfaces in Java. Per Mellqvist writes in developerWorks: “Don’t Repeat the DAO” about creating a GenericDao interface: public interface GenericDao
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Due to popular demand, I will post a very short version of my Lazy Loading article: Why? Because this is bad: Category category = dao.get(1); Category parent = dao.get(category.parentId); int sumChildValue = 0; for (Long childId : parent.subcategoryIds) { sumChildValue += dao.get(childId).getValue(); } System.out.println(sumChildValue); This is good: Category category = dao.get(1); int sumChildValue = 0; for (Category sibling : category.get..
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Status: This article is currently pretty dry. I’d like feedback on how to make it more eloquent. In my previous blog post, I promised to write more about using databases as the main integration strategy. In the current post, I plan to cover maybe the most important question: “Why?” Imagine an application where every time it wants to communicate with another system, it reads or writes to the database. For now, let’s ignore how this would wor..
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The Intermedium of Tissue A variable represents a set of words in a particular order. For example, x might equal the word-set {the quick brown fox jumped over the lazy dog}. Note that the bracket represents the boundary of the word-set and is not included in the set itself. A piece of writing, whether it […]
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Before Web Services, there was CORBA. Before CORBA, there was DCOM. Before DCOM, there was RPC. Before RPC, there was BSD sockets. Before sockets, there were databases. And as it was in the beginning, so shall it too be in the end. The only systematically successful strategy in the history of computing is databases. I have discovered more and more lately that integration using a database is well-defined (DDLs - a WSDL that works!
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I really wish you’d stop using that word - I don’t think it means what you think it means.” (The Princess Bride - of course) When my wife asked “are you a feminist,” I realized I don’t like words very much. To some people, “feminism” means women who dress like men, think pornography is destroying society and that all men are inherently evil. You know the type I’m talking about. To many others, including my wife, a “feminism” is “the radical..
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La verdad es que ni yo mismo lo sé. Si por lógica fuera, ya haría un tiempo que estaría trabajando con otra distribución más simple y en la que la configuración de los dispositivos no ocupase varios días, realizando cientos de búsquedas por Internet y leyendo varios foros. Pero la realidad es que aquí sigo, peleando con el apt-get y actualizando contra la versión unstable de esta distribución. Y tampoco será por falta de alt..
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Here are some of my favorite words. Signs of danger ‘Just’: bad word, as in “can’t we just develop the greatest application ever”, “can’t we just replace the database with JavaSpaces”, “can’t we just expose the functionality to the world as a web service”. ‘Should’: bad word, as in “it _should_n’t take more than a few days to do that, should it,” “integrating two systems should be easy.” Listen for use of this word from people who … should ..
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I’ve again gotten quite backlogged with publishing photos from various adventures. Today I fortunately had time to push tree sets on Flickr : Midgard developer meeting in Komorniki, Poland GUADEC 2006 in Vilanova i Geltru, Catalonia Death Monkey 2006 rally from Helsinki to Gibraltar Enjoy!
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I’ve again gotten quite backlogged with publishing photos from various adventures. Today I fortunately had time to push tree sets on Flickr : Midgard developer meeting in Komorniki, Poland GUADEC 2006 in Vilanova i Geltru, Catalonia Death Monkey 2006 rally from Helsinki to Gibraltar Enjoy!
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Update: Rewrote several sections “Fools ignore complexity; pragmatists suffer it; experts avoid it; geniuses remove it.” - Alan Perlis This article contains some things I have learned that has made me into a better developer than I was before I learned them. There are nine tips. These are not necessarily the only, or the best things I have learned, but I like the number nine. Becoming a better developer is a complex path.
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Updated for republication in Mr Bool In my experience, the most serious bugs in programs in production are in error handling routines. Inventive programmers often try fancy things when dealing with errors, but error situations are often omitted during testing. This article examines the fundamental questions of exceptions: What causes exceptions, and what can be done with them? Bad User, Bad Server, or Bad Programmer Practices of an Agile De..
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What happens when a customer asks for a simple new bit of functionality? Do you have to execute changes on four different systems, test each in isolation and in combination, involve a separate testing, infrastructure and operations team? If so, your architecture is probably not service oriented. In this post, I will examine the real meaning of coupling, and how it relates to SOA. I will, like others taking about SOA, try to define what I me..
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After I switched from Movable Type to Wordpress as my blogging software, the comment spam problem has returned from the grave. So I’ve looked for good solutions for WordPress: I ended on a verbal CAPTCHA with a math question (which may also keep stupid commenters out - not that I have any of those, of course). I am considering some of the “fight-back” solutions out there too: Maybe returning a really big response really slowly when spam is ..
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What is the next letter in this sequence: A E I. And this sequence: A B G D? How about this one: B C D G J? A boy and his mother are in a horrible car accident. They are rushed to the hospital, but on the way, the mother dies. When they arrive at the hospital, the nurse exclaims: “But that is my son!”. How can that be? You’re in the basement of a house.
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My article series on Lazy Loading will be published on java.net tomorrow. In relationship to the publication, I am taking down the original articles from my blog. Please go to Java.net for to read about lazy loading. Update: The article was just posted last Tuesday. I have updated the links in this post.
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Myopia: the inability to see distant objects as clearly as near objects. PreferredConsumer.com What makes a good statement? In my experience, a good statement is one that people will disagree with frequently. One of the internal quality auditors at my company has an excellent plaque in her office: “If you and I agreed all the time, one of us would be superfluous”. So, in the spirit of disharmony: Agile development is all about being myopic,..
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We just got back from vacation this week! No computers, no telephones, no IM, no text messages, no stress (just the occasional deer, moose or bear). Several years ago, I didn’t take any vacation at all during the year and promptly vowed never to do that again. In just one week of vacation, you can reduce all of the stress that you worked so hard to build up all year long. Remember that Canadian companies are famous worldwide for overworki..
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We just got back from vacation this week! No computers, no telephones, no IM, no text messages, no stress (just the occasional deer, moose or bear). Several years ago, I didn’t take any vacation at all during the year and promptly vowed never to do that again. In just one week of vacation, you can reduce all of the stress that you worked so hard to build up all year long. Remember that Canadian companies are famous worldwide for overworki..
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When I see people after they have read about SOA or attended a conference with SOA, there are a few ideas that seem to pop up repeatedly. I have even been guilty of using these ideas myself. These ideas were proven to be bad before SOA came around, and (some) SOA evangelists seem to think that SOA solved these problems. It did not. It just refused to learn from history. Some of these ideas work under some circumstances, but recent SOA-itis ..
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Barcelona I just returned from The ServerSide JavaSymposium Europe. Great conference, with interesting tracks and good opportunities to get to know people. The conference was in Barcelona, which was interesting, because hardly anyone (taxi drivers and waiters included) understand English here. It’s the first time where I’ve been a place where I am totally unable to communicate verbally with people around me. So it as a bit of an adventure. ..
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DJ Catharsis (Renewal through music for those outside the heard) on [EGR Records] spins Hard Techno and Industrial at DEF CON 13 Black and White Ball.
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Regenerator plays at the DEF CON 13 Black and White Ball Los Angeles based duo with a dark electronic dance sound. industrial, gothic, ebm, electro; however you slice it, it's just plain good. :) Harsh male vocals mixed with beautiful, haunting, female vox make for stark contrast. 7 albums - 3 singles - far too many compilation appearances to count here. New album "Disease" available now! - online and in stores everywhere. Remixed b..
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DJ Jackalope spins dirty Drum and Bass at the def con 13 Black and White Ball. For a listing of her set, check out http://www.orbiszine.com/tracks.htm
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DJ Catharsis (Renewal through music for those outside the heard) on [EGR Records] spins Hard Techno and Industrial at DEF CON 13 Black and White Ball.
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Regenerator plays at the DEF CON 13 Black and White Ball Los Angeles based duo with a dark electronic dance sound. industrial, gothic, ebm, electro; however you slice it, it's just plain good. :) Harsh male vocals mixed with beautiful, haunting, female vox make for stark contrast. 7 albums - 3 singles - far too many compilation appearances to count here. New album "Disease" available now! - online and in stores everywhere. Remixed b..
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DJ Jackalope spins dirty Drum and Bass at the def con 13 Black and White Ball. For a listing of her set, check out http://www.orbiszine.com/tracks.htm
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DJ Catharsis (Renewal through music for those outside the heard) on [EGR Records] spins Hard Techno and Industrial at DEF CON 12 Black and White Ball.
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