This is our special "TWiT is Closed for the Holidays" Christmas special encore episode of the tale of "The Portable Dog Killer", a story I relate to Leo and our listeners from my own past, 39 years ago, containing a strong moral about the importance of getting out from behind the video game screen and actually building something.…

After first catching up with a bunch of fun and interesting security and privacy news, Leo and I plow into a meaty and detailed description of the technology of Bluetooth device interconnection and its cryptographic security. A follow-on episode will cover the past hacking attacks against Bluetooth.Door TWiT

Leo and I discuss the week's major security events and discuss questions and comments from listeners of previous episodes. We tie up loose ends, explore a wide range of topics that are too small to fill their own episode, clarify any confusion from previous installments, and present real world 'application notes' for any of the security technologie…

After catching up on the week's security news, this week's co-host Tom Merritt and I discuss the interesting security, privacy, management and technology issues surrounding the implantation of a remotely readable RFID (radio frequency identification) tag into one's own body for the purpose of being authenticated by devices and systems in one's own …

Before plowing into this week's Q&A content, Leo and I catch up with the industry's security and privacy related news. I share a vitamin D researcher's reaction to a troubling new report about vitamin D, and share my recent science fiction reading discoveries and opinions.Door TWiT

After catching up with the week's security updates and news, Leo and I revisit the continuing concern over DNS Spoofing by examining the technology behind my quite comprehensive, free, online DNS Spoofability Testing system at GRC.com.Door TWiT

Leo and I discuss the week's major security events and discuss questions and comments from listeners of previous episodes. We tie up loose ends, explore a wide range of topics that are too small to fill their own episode, clarify any confusion from previous installments, and present real world 'application notes' for any of the security technologie…

After catching up with the week's security updates and news, I formally unveil GRC's latest freeware, the DNS Benchmark. I explain the value of the program's many features and discusses the operation of this "long time in coming" freeware offering.Door TWiT

Leo and I discuss the week's major security events and discuss questions and comments from listeners of previous episodes. We tie up loose ends, explore a wide range of topics that are too small to fill their own episode, clarify any confusion from previous installments, and present real world 'application notes' for any of the security technologie…

After catching up with a very busy week of security-related news and events, Steve and Leo celebrate the game-changing creation and release of "Firesheep", an add-on for the Firefox web browser which makes online web session hijacking as easy as it could possibly be. This WILL change the world for the better.…

Leo and I discuss the week's major security events and discuss questions and comments from listeners of previous episodes. We tie up loose ends, explore a wide range of topics that are too small to fill their own episode, clarify any confusion from previous installments, and present real world 'application notes' for any of the security technologie…

After reviewing the past week's security updates and news, Steve and Leo examine Samy Kamkar's (http://samy.pl/evercookie/) clever suite of Javascript Hacks, collectively used to create an "Evercookie" for tagging web browsers in a fashion that's extremely difficult to shake off.Door TWiT

Leo and I discuss the week's major security events and discuss questions and comments from listeners of previous episodes. We tie up loose ends, explore a wide range of topics that are too small to fill their own episode, clarify any confusion from previous installments, and present real world 'application notes' for any of the security technologie…

Leo and I discuss the deeply troubling recent news of possible legislation that would require all encrypted Internet communications, of any kind, to provide a means for U.S. law enforcement "wiretap" style monitoring.Door TWiT

Leo and I discuss the week's major security events and discuss questions and comments from listeners of previous episodes. We tie up loose ends, explore a wide range of topics that are too small to fill their own episode, clarify any confusion from previous installments, and present real world 'application notes' for any of the security technologie…

This week, after covering some rather significant security updates and news, Leo and I plow into the still-evolving Internet OAuth protocol. OAuth is used for managing the controlled delegation of access authorization to third-party web sites and services. It sounds more confusing than it is. Well, maybe not.…

Leo and I discuss the week's major security events and discuss questions and comments from listeners of previous episodes. We tie up loose ends, explore a wide range of topics that are too small to fill their own episode, clarify any confusion from previous installments, and present real world 'application notes' for any of the security technologie…

This week Leo and I examine the many tiny bits of individually non-unique information that inherently leak from a user's web browser out on the Internet. What's surprising is that when all of these individual non-unique bits are gathered together and assembled into a single "fingerprint," the result IS often unique and can thereby be used as a trac…

Leo and I discuss the week's major security events and discuss questions and comments from listeners of previous episodes. We tie up loose ends, explore a wide range of topics that are too small to fill their own episode, clarify any confusion from previous installments, and present real world 'application notes' for any of the security technologie…

This week, after catching up with the week's security news, Steve describes the exciting emerging web standard known as "STS" or "Strict Transport Security" which, when supported by browser and web site, allows a web site to dramatically increase its access security by telling the browser to only connect securely and disallow any security exception…

Leo and I discuss the week's major security events and discuss questions and comments from listeners of previous episodes. We tie up loose ends, explore a wide range of topics that are too small to fill their own episode, clarify any confusion from previous installments, and present real world 'application notes' for any of the security technologie…

This week, after catching up on all of the post-BlackHat and DefCon conference news, Steve and Leo plow into the detailed depths of "DNS Rebinding." Together they thoroughly explore this significant and fundamental weakness of the Internet's security.Door TWiT

Leo and I discuss the week's major security events and discuss questions and comments from listeners of previous episodes. We tie up loose ends, explore a wide range of topics that are too small to fill their own episode, clarify any confusion from previous installments, and present real world 'application notes' for any of the security technologie…

This week Leo and I discuss a disturbing new Windows 0-day vulnerability present in all versions of Windows. We cover a very busy week of security news, then discuss the recently released report from Secunia which analyzes the past five years of Windows software vulnerabilities.Door TWiT

Leo and I discuss the week's major security events and discuss questions and comments from listeners of previous episodes. We tie up loose ends, explore a wide range of topics that are too small to fill their own episode, clarify any confusion from previous installments, and present real world 'application notes' for any of the security technologie…

Steve and Leo cover the week's Internet-related security news, then Steve delivers his long awaited in-depth review and evaluation of LastPass. Steve explains the nature of the need for high-security passwords, the problem that need creates, and the way the design of LastPass completely and in every way securely answers that need.…

Leo and I discuss the week's major security events and discuss questions and comments from listeners of previous episodes. We tie up loose ends, explore a wide range of topics that are too small to fill their own episode, clarify any confusion from previous installments, and present real world 'application notes' for any of the security technologie…

This week Steve and Leo examine the amazing evolution of microprocessor internals. They trace the development of the unbelievably complex technologies that have been developed over the past 25 years to wring every last possible cycle of performance from an innocent slice of silicon.Door TWiT

Leo and I discuss the week's major security events and discuss questions and comments from listeners of previous episodes. We tie up loose ends, explore a wide range of topics that are too small to fill their own episode, clarify any confusion from previous installments, and present real world 'application notes' for any of the security technologie…

After catching up from a very busy week of security news, I recount the history of the development of complex instruction set (CISC) computers following their evolution into reduced instruction set (RISC) computers.Door TWiT

Leo and I discuss the week's major security events and discuss questions and comments from listeners of previous episodes. We tie up loose ends, explore a wide range of topics that are too small to fill their own episode, clarify any confusion from previous installments, and present real world 'application notes' for any of the security technologie…

After catching up on the week's important security news, Steve & Leo continue their tour of the fundamentals of computer technology by looking at the history and present day features of modern operating systems.Door TWiT

Leo and I discuss the week's major security events and discuss questions and comments from listeners of previous episodes. We tie up loose ends, explore a wide range of topics that are too small to fill their own episode, clarify any confusion from previous installments, and present real world 'application notes' for any of the security technologie…

In commemoration of the 50th anniversary of the invention of the LASER, this week Steve is going to relate a story from his own past, 39 years ago, containing a strong moral about the importance of getting out from behind the video game screen and actually building something.Door TWiT

Steve and Leo continue with their "fundamentals of computing" series this week, building upon all previous installments, to explain the details of multi-threading, multi-tasking, multi-processing, multi-core ... the "multi"-verse of modern computing.Door TWiT

Leo and I discuss the week's major security events and discuss questions and comments from listeners of previous episodes. We tie up loose ends, explore a wide range of topics that are too small to fill their own episode, clarify any confusion from previous installments, and present real world 'application notes' for any of the security technologie…

After catching up on many interesting recent security events, Steve and Leo seriously examine the proven comparative security of open versus closed source and development software, and open versus closed execution platforms. What's really more secure?Door TWiT

Leo and I discuss the week's major security events and discuss questions and comments from listeners of previous episodes. We tie up loose ends, explore a wide range of topics that are too small to fill their own episode, clarify any confusion from previous installments, and present real world 'application notes' for any of the security technologie…

Leo and I catch up with the weekly security news, and I share my very positive impressions of my Apple iPad. Then I explain why and how world governments are able to legally compel their national SSL Certificate Authorities to issue Intermediate CA certificates which allow agencies of those governments to surreptitiously intercept, decrypt, and mon…

Leo and I discuss the week's major security events and discuss questions and comments from listeners of previous episodes. We tie up loose ends, explore a wide range of topics that are too small to fill their own episode, clarify any confusion from previous installments, and present real world 'application notes' for any of the security technologie…

In this fourth installment of Steve's "How Computers Work" series, Steve explains the operation of "hardware interrupts" which, by instantly interrupting the normal flow of instructions, allow computers to attend to the needs of the hardware that interacts with the outside world while they are in the middle of doing other things.…

Leo and I discuss the week's major security events and discuss questions and comments from listeners of previous episodes. We tie up loose ends, explore a wide range of topics that are too small to fill their own episode, clarify any confusion from previous installments, and present real world 'application notes' for any of the security technologie…

After a significant security news update, Steve and Leo continue their description of the operation of computers at the raw hardware level. This week Steve explains why and how computers have multiple accumulators, and also how a computer's "stack" operates and why stacks have become a crucial component of all modern computers.…

Leo and I discuss the week's major security events and discuss questions and comments from listeners of previous episodes. We tie up loose ends, explore a wide range of topics that are too small to fill their own episode, clarify any confusion from previous installments, and present real world 'application notes' for any of the security technologie…

A feature present in the earliest commercial computers, known as "indirection", has proven to be necessary, powerful, beneficial . . . and amazingly dangerous and difficult for programmers to "get right". This week, Leo and I examine the Power of Pointers and why, even after all these years, they continue to bedevil programmers of all ages.…

Leo and I discuss the week's major security events and discuss questions and comments from listeners of previous episodes. We tie up loose ends, explore a wide range of topics that are too small to fill their own episode, clarify any confusion from previous installments, and present real world 'application notes' for any of the security technologie…

After starting at the very beginning two weeks ago by looking at how resistors and transistors can be used to assemble logical functions, this week Steve and Leo use those functions to build a working digital computer that understands a simple but entirely useful and workable machine language.Door TWiT

Leo and I discuss the week's major security events and discuss questions and comments from listeners of previous episodes. We tie up loose ends, explore a wide range of topics that are too small to fill their own episode, clarify any confusion from previous installments, and present real world 'application notes' for any of the security technologie…

To understand the advances made during 50 years of computer evolution, we need to understand computers 50 years ago. In this first installment of a new Security Now series, we design a 50 year old computer. In future weeks, we will trace the factors that shaped their design during the four decades that followed.…

Leo and I discuss the week's major security events and discuss questions and comments from listeners of previous episodes. We tie up loose ends, explore a wide range of topics that are too small to fill their own episode, clarify any confusion from previous installments, and present real world 'application notes' for any of the security technologie…