Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit Free Software Free as in Freedom Linux for Teachers Nick Urbanik This document Licensed under GPL—see section 13 DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read 5, 6 December 2005 License Of This Document Outline Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? GPL and Proprietary Licenses Other Free Software Licenses Some Things to Read License Of This Document Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Why Free Software? Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Okay, I go along with: saving the whales feeding the hungry combatting the ignorance about the evil treatment of aboriginal people caring about slaughter of innocent people in Sudan and Iraq But Free Software? Is it worth getting all righteous about free software? Why Free Software? Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Okay, I go along with: saving the whales feeding the hungry combatting the ignorance about the evil treatment of aboriginal people caring about slaughter of innocent people in Sudan and Iraq But Free Software? Is it worth getting all righteous about free software? Why Free Software? Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Okay, I go along with: saving the whales feeding the hungry combatting the ignorance about the evil treatment of aboriginal people caring about slaughter of innocent people in Sudan and Iraq But Free Software? Is it worth getting all righteous about free software? Why Free Software? Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Okay, I go along with: saving the whales feeding the hungry combatting the ignorance about the evil treatment of aboriginal people caring about slaughter of innocent people in Sudan and Iraq But Free Software? Is it worth getting all righteous about free software? Why Free Software? Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Okay, I go along with: saving the whales feeding the hungry combatting the ignorance about the evil treatment of aboriginal people caring about slaughter of innocent people in Sudan and Iraq But Free Software? Is it worth getting all righteous about free software? Why Free Software? Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Okay, I go along with: saving the whales feeding the hungry combatting the ignorance about the evil treatment of aboriginal people caring about slaughter of innocent people in Sudan and Iraq But Free Software? Is it worth getting all righteous about free software? Yes it is! Bless your computer, my child! To join the Church of Emacs, you need only say the Confession of the Faith three times: There is no system but GNU, and Linux is one of its kernels. And Bless you too, Saint IGNUtius. Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Yes it is! Bless your computer, my child! To join the Church of Emacs, you need only say the Confession of the Faith three times: There is no system but GNU, and Linux is one of its kernels. And Bless you too, Saint IGNUtius. Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Yes it is! Bless your computer, my child! To join the Church of Emacs, you need only say the Confession of the Faith three times: There is no system but GNU, and Linux is one of its kernels. And Bless you too, Saint IGNUtius. Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Richard Stallman’s Tin Foil Hat Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon 18 November 2005: Richard Stallman and Bruce Perens were invited by UN as keynote speakers at the UN World Summit on the information society in Tunis, Tunisia Richard is opposed to RF ID, because of the many privacy violations possible A promise was given at the 2003 WSIS in Geneva to not issue RFIDs again He was given one on entry Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Richard Stallman causes Trouble Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit He wrapped huge amounts of aluminium foil around it, wearing it very prominently Richard offered foil to anyone who would take some He willingly unwrapped it to go through any of the visible check-points, he simply objected to the potential that people might be reading the RF ID without his knowledge and tracking him around the grounds. UN security would not let him leave for a long time Then would not let him in for his next talk, delaying the whole proceeding by a long time. DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Sony’s Rootkit A rootkit is a set of software tools frequently used by crackers after gaining access to a computer system. These tools are intended to conceal running processes, files or system data which helps an intruder maintain access to a system without the user’s knowledge. Sony Corporation have been distributing rootkits on their music CDs over the last year and a half The software is installed on your computer without your permission even if you decline the EULA Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Why? To protect the music industry from piracy. Sony have ripped off lots of free software to make the root kit without regard for the license terms, including code written by DVD Jon. Poor Celine Lovers! Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Foxtrot, 21 November 2005 Some Things to Read License Of This Document DVD Jon Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat The autumn of 1999 Jon Lech Johansen (“DVD Jon”) with others decrypted the copy control system on DVD records to make it possible to view the DVDs at the Linux operating system. The program that made this possible was called “DeCSS” and released on the Internet. This resulted in him being sued by DVD Copy Control Association in USA, arrested by Norwegian police and charged by The Norwegian National Authority for Investigation and Prosecution of Economic and Environmental Crime (ØKOKRIM). Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Digital Milenimum Copyright Act (DMCA) Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) This is an effort to use the law to control the copying of files Involves making it illegal to write software to circumvent a copy protection system Markers should be outlawed Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Software Patents Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Companies pay to collect software patents Use these as a nuclear arsenal to drop on competitors These can be a terrible threat to free software. . . . . . as well as to non-multi-national software developers Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document So Why do we need Free Software? Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document The world is moving to a situation where our ability to back up and use data content is controlled by law If all the operating system software we use is provided by big multinationals, then the control will be easily implemented Free software is controlled by its users, and cannot be controlled by any corporation, multinational or otherwise What is Free Software? Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Defined by Richard Stallman Author of GPL (General Public License) Author of Emacs editor, GNU compiler suite Founder of the Free Software Foundation Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Sometimes viewed (incorrectly) as the same thing as Open Source. Sometimes viewed (Very incorrectly!) as the same thing as Freeware or shareware!! The GPL defines four freedoms. GPL: the Four Freedoms Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit The freedom to run the program, for any purpose (freedom 0). The freedom to study how the program works, and adapt it to your needs (freedom 1). Access to the source code is a precondition for this. The freedom to redistribute copies so you can help your neighbor (freedom 2). The freedom to improve the program, and release your improvements to the public, so that the whole community benefits. (freedom 3). Access to the source code is a precondition for this. DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Why does Microsoft call the GPL "Viral"? Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents Microsoft hate the GPL with passion Have called the license “viral”, even in their legal documents! Why do they do this? They say that if anyone uses some GPL code in their product, then they are required to distribute all the source code to their product So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? GPL and Proprietary Licenses Other Free Software Licenses Some Things to Read License Of This Document Outline Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? GPL and Proprietary Licenses Other Free Software Licenses Some Things to Read License Of This Document Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? GPL and Proprietary Licenses Other Free Software Licenses Some Things to Read License Of This Document GPL and Proprietary Licenses Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) However, if you view source code Microsoft released under their “shared source” scheme write some software that is related in some way Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? GPL and Proprietary Licenses Will the Microsoft Legal Department treat you nicely? I would not dare view Microsoft source code. Other Free Software Licenses Some Things to Read License Of This Document Other Free Software Licences Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) These include the BSD license Allows any company to include the code, modify it, keep it all secret. People may be less motivated to contribute if their work goes to Microsoft. Microsoft like this license. Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Resources I Sam Williams. Free as in Freedom: Richard Stallman’s Crusade for Free Software. O’Reilly 2002. http://oreilly.com/openbook/freedom/ Bruce Perens. Friday, November 18: Richard Stallman Gets in Trouble with UN Security for Wearing a Tin-Foil Hat. http://perens.sourcelabs.com/ http://lwn.net/Articles/160913/ Jon Lech Johansen. So Sue Me! http://nanocrew.net/ http://efn.no/jonjohansen-en.html Electronic Frontier Foundation. Digital Millennium Copyright Act (DMCA) Archive http://www.eff.org/IP/DMCA/ Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Resources II Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document GNU General Public License. http://www.gnu.org/copyleft/gpl.html Topics Covered Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? GPL and Proprietary Licenses Other Free Software Licenses Some Things to Read License Of This Document Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Topics Covered Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? GPL and Proprietary Licenses Other Free Software Licenses Some Things to Read License Of This Document Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Topics Covered Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? GPL and Proprietary Licenses Other Free Software Licenses Some Things to Read License Of This Document Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Topics Covered Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? GPL and Proprietary Licenses Other Free Software Licenses Some Things to Read License Of This Document Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Topics Covered Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? GPL and Proprietary Licenses Other Free Software Licenses Some Things to Read License Of This Document Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Topics Covered Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? GPL and Proprietary Licenses Other Free Software Licenses Some Things to Read License Of This Document Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Topics Covered Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? GPL and Proprietary Licenses Other Free Software Licenses Some Things to Read License Of This Document Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Topics Covered Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? GPL and Proprietary Licenses Other Free Software Licenses Some Things to Read License Of This Document Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Topics Covered Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? GPL and Proprietary Licenses Other Free Software Licenses Some Things to Read License Of This Document Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Topics Covered Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? GPL and Proprietary Licenses Other Free Software Licenses Some Things to Read License Of This Document Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Topics Covered Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? GPL and Proprietary Licenses Other Free Software Licenses Some Things to Read License Of This Document Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Topics Covered Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? GPL and Proprietary Licenses Other Free Software Licenses Some Things to Read License Of This Document Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Topics Covered Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? GPL and Proprietary Licenses Other Free Software Licenses Some Things to Read License Of This Document Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Topics Covered Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? GPL and Proprietary Licenses Other Free Software Licenses Some Things to Read License Of This Document Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document License Of This Document Free Software Nick Urbanik Why Free Software? Richard Stallman’s Tin Foil Hat Sony’s Rootkit DVD Jon Digital Milenimum Copyright Act (DMCA) Software Patents So Why do we need Free Software? What is Free Software? The Four Freedoms Is the GPL viral? Other Free Software Licenses Some Things to Read License Of This Document Copyright c 2005 Nick Urbanik You can redistribute modified or unmodified copies of this document provided that this copyright notice and this permission notice are preserved on all copies under the terms of the GNU General Public License as published by the Free Software Foundation—either version 2 of the License or (at your option) any later version.