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When there’s a merge conflict in Mercurial, TortoiseHG will give you the option to ’take local’ or ’take other’ in addition to resolving the conflict. However, sometimes you may want to ’take local’ or ’take other’ when there’s no merge conflict. To take local: hg merge --tool internal:local To take other: hg merge --tool internal:other
Last time we investigated the (very unintuitive) concept of a topological space as a set of “points” endowed with a description of which subsets are open. Now in order to actually arrive at a discussion of interesting and useful topological spaces, we need to be able to take simple topological spaces and build them up into more complex ones. This will take the form of subspaces and quotients, and through these we will make rigorous the noti..
Last time we investigated the (very unintuitive) concept of a topological space as a set of “points” endowed with a description of which subsets are open. Now in order to actually arrive at a discussion of interesting and useful topological spaces, we need to be able to take simple topological spaces and build them up into more complex ones. This will take the form of subspaces and quotients, and through these we will make rigorous the noti..
Last time we investigated the (very unintuitive) concept of a topological space as a set of “points” endowed with a description of which subsets are open. Now in order to actually arrive at a discussion of interesting and useful topological spaces, we need to be able to take simple topological spaces and build them up into more complex ones. This will take the form of subspaces and quotients, and through these we will make rigorous the noti..
Introduction - sam.hooke.me - 13 years ago - eng
Introduction - sam.hooke.me - 13 years ago - eng
In this lecture we learn about business models and about the Business Model Canvas as a tool for mapping business models. We learn that a company is for executing a business model whereas a startup is for finding one and then becoming a company. I fully agree with the view of a startup as a […]
Skyfall Outing - sam.hooke.me - 13 years ago - eng
After gathering first at a certain house, all members of the Tea Club set out to watch the 11:15am screening of Skyfall - though taking into account adverts, it actually started at 11:50am. This was rather fortunate because we arrived at almost half past.
Skyfall Outing - sam.hooke.me - 13 years ago - eng
After gathering first at a certain house, all members of the Tea Club set out to watch the 11:15am screening of Skyfall - though taking into account adverts, it actually started at 11:50am. This was rather fortunate because we arrived at almost half past.
Problem: Prove there are infinitely many primes Solution: Denote by $ \pi(n)$ the number of primes less than or equal to $ n$. We will give a lower bound on $ \pi(n)$ which increases without bound as $ n \to \infty$. Note that every number $ n$ can be factored as the product of a square free number $ r$ (a number which no square divides) and a square $ s^2$.
Problem: Prove there are infinitely many primes Solution: Denote by $ \pi(n)$ the number of primes less than or equal to $ n$. We will give a lower bound on $ \pi(n)$ which increases without bound as $ n \to \infty$. Note that every number $ n$ can be factored as the product of a square free number $ r$ (a number which no square divides) and a square $ s^2$.
Problem: Prove there are infinitely many primes Solution: Denote by $ \pi(n)$ the number of primes less than or equal to $ n$. We will give a lower bound on $ \pi(n)$ which increases without bound as $ n \to \infty$. Note that every number $ n$ can be factored as the product of a square free number $ r$ (a number which no square divides) and a square $ s^2$.
Beyond the War on General Purpose Computing: What's Inside the Box? Cory Docotorow Author, Activist, Blogger, Co-Editor of BoingBoing.net Assuming the failure of all the calls to regulate PCs and the Internet because people might do bad things with them, what then? Civil war, that's what. The su/user split we inherited from multiuser systems has given us a false intuition: that owners of computers, and not their users, should set p..
Beyond the War on General Purpose Computing: What's Inside the Box? Cory Docotorow Author, Activist, Blogger, Co-Editor of BoingBoing.net Assuming the failure of all the calls to regulate PCs and the Internet because people might do bad things with them, what then? Civil war, that's what. The su/user split we inherited from multiuser systems has given us a false intuition: that owners of computers, and not their users, should set p..
Beyond the War on General Purpose Computing: What's Inside the Box? Cory Docotorow Author, Activist, Blogger, Co-Editor of BoingBoing.net Assuming the failure of all the calls to regulate PCs and the Internet because people might do bad things with them, what then? Civil war, that's what. The su/user split we inherited from multiuser systems has given us a false intuition: that owners of computers, and not their users, should set p..
Post Metasploitation: Improving Accuracy and Efficiency in Post Exploitation Using the Metasploit Framework egypt Developer, Rapid7 As many in this community have echoed, shell is just the beginning. Owning a box is all well and good, but where do you go from there? Everyone has their own secret sauce for furthering their access after gaining a foothold. This talk will focus on the techniques, from simple to advanced, available for....
Post Metasploitation: Improving Accuracy and Efficiency in Post Exploitation Using the Metasploit Framework egypt Developer, Rapid7 As many in this community have echoed, shell is just the beginning. Owning a box is all well and good, but where do you go from there? Everyone has their own secret sauce for furthering their access after gaining a foothold. This talk will focus on the techniques, from simple to advanced, available for....
Post Metasploitation: Improving Accuracy and Efficiency in Post Exploitation Using the Metasploit Framework egypt Developer, Rapid7 As many in this community have echoed, shell is just the beginning. Owning a box is all well and good, but where do you go from there? Everyone has their own secret sauce for furthering their access after gaining a foothold. This talk will focus on the techniques, from simple to advanced, available for....
Changing the Security Paradigm: Taking Back Your Network and Bringing Pain to the Adversary Shawn Henry CrowdStrike The threat to our networks is increasing at an unprecedented rate. The hostile environment we operate in has rendered traditional security strategies obsolete. Adversary advances require changes in the way we operate, and "offense" changes the game. Shawn Henry Prior to joining CrowdStrike, Henry was with the FB..
Busting the BARR: Tracking "Untrackable" Private Aircraft for Fun &Profit Dustin Hoffman President & Senior Engineer, Exigent Systems Inc. Semon Rezchikov Independent Researcher Private aircraft provide transportation to interesting people: corporate officers, business owners, celebrities, high net-worth individuals, etc. In recent years, sites like FlightAware have made it trivial to access all public flight plans. However....
Changing the Security Paradigm: Taking Back Your Network and Bringing Pain to the Adversary Shawn Henry CrowdStrike The threat to our networks is increasing at an unprecedented rate. The hostile environment we operate in has rendered traditional security strategies obsolete. Adversary advances require changes in the way we operate, and "offense" changes the game. Shawn Henry Prior to joining CrowdStrike, Henry was with the FB..
Busting the BARR: Tracking "Untrackable" Private Aircraft for Fun &Profit Dustin Hoffman President & Senior Engineer, Exigent Systems Inc. Semon Rezchikov Independent Researcher Private aircraft provide transportation to interesting people: corporate officers, business owners, celebrities, high net-worth individuals, etc. In recent years, sites like FlightAware have made it trivial to access all public flight plans. However....
Changing the Security Paradigm: Taking Back Your Network and Bringing Pain to the Adversary Shawn Henry CrowdStrike The threat to our networks is increasing at an unprecedented rate. The hostile environment we operate in has rendered traditional security strategies obsolete. Adversary advances require changes in the way we operate, and "offense" changes the game. Shawn Henry Prior to joining CrowdStrike, Henry was with the FB..
Busting the BARR: Tracking "Untrackable" Private Aircraft for Fun &Profit Dustin Hoffman President & Senior Engineer, Exigent Systems Inc. Semon Rezchikov Independent Researcher Private aircraft provide transportation to interesting people: corporate officers, business owners, celebrities, high net-worth individuals, etc. In recent years, sites like FlightAware have made it trivial to access all public flight plans. However....
Crypto and the Cops: the Law of Key Disclosure and Forced Decryption Marcia Hofmann Senior Staff Attorney, Electronic Frontier Foundation Can the government force you to turn over your encryption passphrase or decrypt your data? The law surrounding police attempts to force decryption is developing at breakneck speed, with two major court decisions this year alone. This talk will start off with an in-depth explanation of the Fifth A....
Crypto and the Cops: the Law of Key Disclosure and Forced Decryption Marcia Hofmann Senior Staff Attorney, Electronic Frontier Foundation Can the government force you to turn over your encryption passphrase or decrypt your data? The law surrounding police attempts to force decryption is developing at breakneck speed, with two major court decisions this year alone. This talk will start off with an in-depth explanation of the Fifth A....
Crypto and the Cops: the Law of Key Disclosure and Forced Decryption Marcia Hofmann Senior Staff Attorney, Electronic Frontier Foundation Can the government force you to turn over your encryption passphrase or decrypt your data? The law surrounding police attempts to force decryption is developing at breakneck speed, with two major court decisions this year alone. This talk will start off with an in-depth explanation of the Fifth A....
How to Hack All the Transport Networks of a Country Alberto García Illera The presentation is about a real black hacking act against the transport network of a country. It can be extrapolated to any other country. We will show how to get full access to the entire transport network. Manipulating parameters to get free tickets, getting control of the ticket machines, getting clients CC dumps, hooking internal processes to get the cli....
How to Hack All the Transport Networks of a Country Alberto García Illera The presentation is about a real black hacking act against the transport network of a country. It can be extrapolated to any other country. We will show how to get full access to the entire transport network. Manipulating parameters to get free tickets, getting control of the ticket machines, getting clients CC dumps, hooking internal processes to get the cli....
How to Hack All the Transport Networks of a Country Alberto García Illera The presentation is about a real black hacking act against the transport network of a country. It can be extrapolated to any other country. We will show how to get full access to the entire transport network. Manipulating parameters to get free tickets, getting control of the ticket machines, getting clients CC dumps, hooking internal processes to get the cli....
Bigger Monster, Weaker Chains: The National Security Agency and the Constitution Jameel Jaffer Deputy Legal Director, American Civil Liberties Union William Binney Former Official, National Security Agency James Bamford Investigative Journalist Alex Abdo Staff Attorney, American Civil Liberties Union The National Security Agency, the largest, most powerful spy agency in the world, has taken in an estimated 15 to 20 trillio....
Bigger Monster, Weaker Chains: The National Security Agency and the Constitution Jameel Jaffer Deputy Legal Director, American Civil Liberties Union William Binney Former Official, National Security Agency James Bamford Investigative Journalist Alex Abdo Staff Attorney, American Civil Liberties Union The National Security Agency, the largest, most powerful spy agency in the world, has taken in an estimated 15 to 20 trillio....
Bigger Monster, Weaker Chains: The National Security Agency and the Constitution Jameel Jaffer Deputy Legal Director, American Civil Liberties Union William Binney Former Official, National Security Agency James Bamford Investigative Journalist Alex Abdo Staff Attorney, American Civil Liberties Union The National Security Agency, the largest, most powerful spy agency in the world, has taken in an estimated 15 to 20 trillio....
Owning One to Rule Them All Dave Kennedy Chief Security Officer Dave DeSimone Manager, Information Security As penetration testers, we often try to impact an organization as efficient and effective as we can to simulate an attack on an organization. What if you could own one system to own them all? That's it, one system. It's all you need, it's in every company, and as soon as you compromise it, the rest fall (no not a domain co....
Owning One to Rule Them All Dave Kennedy Chief Security Officer Dave DeSimone Manager, Information Security As penetration testers, we often try to impact an organization as efficient and effective as we can to simulate an attack on an organization. What if you could own one system to own them all? That's it, one system. It's all you need, it's in every company, and as soon as you compromise it, the rest fall (no not a domain co....
Owning One to Rule Them All Dave Kennedy Chief Security Officer Dave DeSimone Manager, Information Security As penetration testers, we often try to impact an organization as efficient and effective as we can to simulate an attack on an organization. What if you could own one system to own them all? That's it, one system. It's all you need, it's in every company, and as soon as you compromise it, the rest fall (no not a domain co....
Robots: You're Doing It Wrong 2 Katy Levinson Director of Development, Hacker Dojo By popular demand, Defcon's angry little roboticist is back with more stories of robot designs gone awry that make practical lessons on making better robots. Drinking will happen: vodka-absconding scoundrels are not invited. This talk will cover material assuming the average audience member is a relatively intelligent coder with a high-school p....
Robots: You're Doing It Wrong 2 Katy Levinson Director of Development, Hacker Dojo By popular demand, Defcon's angry little roboticist is back with more stories of robot designs gone awry that make practical lessons on making better robots. Drinking will happen: vodka-absconding scoundrels are not invited. This talk will cover material assuming the average audience member is a relatively intelligent coder with a high-school p....
Robots: You're Doing It Wrong 2 Katy Levinson Director of Development, Hacker Dojo By popular demand, Defcon's angry little roboticist is back with more stories of robot designs gone awry that make practical lessons on making better robots. Drinking will happen: vodka-absconding scoundrels are not invited. This talk will cover material assuming the average audience member is a relatively intelligent coder with a high-school p....
Defeating PPTP VPNs and WPA2 Enterprise with MS-CHAPv2 Moxie Marlinspike David Hulton Marsh Ray MS-CHAPv2 is an authentication and key negotiation protocol that, while old and battered, is still unfortunately deployed quite widely. It underpins almost all PPTP VPN services, and is relied upon by many WPA2 Enterprise wireless deployments. We will release tools that definitively break the protocol, allowing anyone to affordably....
Defeating PPTP VPNs and WPA2 Enterprise with MS-CHAPv2 Moxie Marlinspike David Hulton Marsh Ray MS-CHAPv2 is an authentication and key negotiation protocol that, while old and battered, is still unfortunately deployed quite widely. It underpins almost all PPTP VPN services, and is relied upon by many WPA2 Enterprise wireless deployments. We will release tools that definitively break the protocol, allowing anyone to affordably....
Defeating PPTP VPNs and WPA2 Enterprise with MS-CHAPv2 Moxie Marlinspike David Hulton Marsh Ray MS-CHAPv2 is an authentication and key negotiation protocol that, while old and battered, is still unfortunately deployed quite widely. It underpins almost all PPTP VPN services, and is relied upon by many WPA2 Enterprise wireless deployments. We will release tools that definitively break the protocol, allowing anyone to affordably....
SCADA HMI and Microsoft Bob: Modern Authentication Flaws With a 90's Flavor Wesley McGrew Research Associate and Lecturer Critical Infrastructure Protection Center, National Forensics Training Center, Mississippi State University SCADA HMI software provides a "control panel" interface to SCADA/ICS systems, allowing system operators and engineers the capability to visually monitor and make changes to parameters in the system. Man....
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