For this special year-end holiday edition of Security Now!, I dug down deep into my video archives, taking back 22 years, to 1990, to share a 45-minute presentation I gave, once upon a time, on the inner workings of the "megabyte-sized" hard disk drives that gave birth to the PC industry.

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 technologies and issues we have previously discussed.

After catching up with the week's news, Leo and I take a deep dive into the technology of the ever-more-ubiquitous "QR Codes" which are popping up everywhere and are increasingly being used, not only for good, but with malicious intent.

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 technologies and issues we have previously discussed.

After catching up with lots of interesting security news, updates on Steve's Acoustic Dog Training project, and lots of other miscellany, Leo and I examine a recently developed and increasingly popular Internet security protocol, DTLS, which combines the advantages of UDP with SSL security.

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 technologies and issues we have previously discussed.

After catching up with an interesting and varied grab-bag of security news and paraphernalia, Tom and I further examine the controversy surrounding Microsoft's decision to enable the Do Not Track (DNT) "signal" header in IE10, and share some insights gained from a recent Microsoft Executive VP Keynote presentation about exactly this issue.

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 technologies and issues we have previously discussed.

This week, after failing to find much in the way of interesting security news, Leo and I make up for that by introducing the concept of "Fully Homomorphic Encryption," which allows encrypted data to be operated upon WITHOUT it first being decrypted, and results remain encrypted.

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 technologies and issues we have previously discussed.