InfoSecPodcast.com http://www.infosecpodcast.com Information Security related news, opinions and ramblings Sun, 27 Dec 2009 18:01:32 +0000 http://wordpress.org/?v=2.9.1 en hourly 1 How-to on securing PDF documents http://www.infosecpodcast.com/2009/12/how-to-on-securing-pdf-documents/ http://www.infosecpodcast.com/2009/12/how-to-on-securing-pdf-documents/#comments Sun, 27 Dec 2009 18:01:32 +0000 Chris Harrington http://www.infosecpodcast.com/?p=205 A friend of mine pointed me to a good article on securing PDF documents. http://secforall.info/2009/06/29/securing-pdfs/ It’s a good tutorial on how to password protect, digitally sign and certify PDF documents. Now if only we could have some intelligence in email clients (or maybe a setting in Acrobat Reader?) that would prohibit or at least strongly warn when a user tries to open an un-signed PDF. This would make my life much easier from a malware perspective…..I think.

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Updating my feed location…thanks Google http://www.infosecpodcast.com/2009/06/updating-my-feed-locationthanks-google/ http://www.infosecpodcast.com/2009/06/updating-my-feed-locationthanks-google/#comments Thu, 04 Jun 2009 21:06:28 +0000 Chris Harrington http://www.infosecpodcast.com/?p=201 Well thanks to a borked Feedburner to Google transfer I need to update my feed location.  The current feed feeds.feedburner.com/wwwInfosecpodcastcom will be moved to feeds2.feedburner.com/infosecpodcastcom one week from today, 6/11/09.

–Chris

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Most dangerous keywords to search for http://www.infosecpodcast.com/2009/06/most-dangerous-keywords-to-search-for/ http://www.infosecpodcast.com/2009/06/most-dangerous-keywords-to-search-for/#comments Thu, 04 Jun 2009 20:46:00 +0000 Chris Harrington http://www.infosecpodcast.com/?p=198 Dancho Danchev posted on the release of a McAfee report that analyzes what keywords are the most dangerous in terms of the search results linking to malware.

“Upon searching for 2,658 unique popular keywords and phrases across 413,368 unique URLs, McAfee’s research concludes that lyrics and anything that includes ‘free” has the highest risk percentage of exposing users to malware and fraudulent web sites. The research further states that the category with the safest risk profile are health-related search terms.”

It’s an interesting read.

–Chris

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MIT Lincoln Lab Network Security Software http://www.infosecpodcast.com/2009/02/mit-lincoln-lab-network-security-software/ http://www.infosecpodcast.com/2009/02/mit-lincoln-lab-network-security-software/#comments Tue, 10 Feb 2009 19:08:05 +0000 Chris Harrington http://www.infosecpodcast.com/?p=193 MIT Lincoln Laboratory has developed a Network Security Analysis application known as NetSPA. In short, I am very impressed with this tool. NetSPA (Network Security Planning Architecture) correlates firewall rules / ACL’s with vulnerability data such as Nessus output. This tool then visually plots attack paths through an interactive interface that lets you model different scenarios. It also allows administrators to prioritize which vulnerabilities should be fixed first. Rather than just relying on the severity of the vulnerability we reliably factor in attack vectors based on current network security rules. We (IT Security Ops team) have been working with the development team and helping to provide test data and general feedback. This tool is so impressive that we will be implementing it as part of our security change management process. We will be able to visualize what a firewall rule change will do to our security posture for example.

Having access to this type of technology and the research community is one of the many benefits of working at one of the finest research laboratories in the world.

–Chris

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3 open InfoSec positions at MIT Lincoln Laboratory http://www.infosecpodcast.com/2008/11/3-infosec-positions-mit-lincoln-laboratory/ http://www.infosecpodcast.com/2008/11/3-infosec-positions-mit-lincoln-laboratory/#comments Tue, 11 Nov 2008 02:48:47 +0000 Chris Harrington http://www.infosecpodcast.com/?p=188

We currently have 3 Information Security positions open at MIT Lincoln Laboratory. The first position is Information Technology Security Team Lead. It is position #914 on the Employment page. Rather than re-hashing all the details you can read about it there. The other 2 positions do not have job postings up yet. We need 2 IDS / IPS analysts full time. Details of the positions should be posted soon.

All 3 positions are in Lexington, MA and will require the candidates to be able to obtain at least a SECRET level security clearance. If you or anybody you know may be interested please contact me at: chris.harrington AT ll.mit.edu

Thanks!

–Chris

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NAC Panel Discussion: What is the state of NAC? http://www.infosecpodcast.com/2008/10/nac-panel-discussion-what-is-the-state-of-nac/ http://www.infosecpodcast.com/2008/10/nac-panel-discussion-what-is-the-state-of-nac/#comments Wed, 29 Oct 2008 23:07:22 +0000 Chris Harrington http://www.infosecpodcast.com/?p=184 This morning at work I moderated a panel discussion on Network Access Control. The audience was made up of IT Security staff from several research and development organizations. There were representatives from 3 vendors in attendance as well. The audience represented a good cross section of NAC adopters. Some have had it for 2 years, some deploying this year while others had future or no plans to deploy NAC.

There was good audience participation so I only had to pull out 1 or 2 “canned” questions in the time allotted. I’ve tried to summarize the points and information that we learned from this exercise below. These are in no particular order.

1. No clear definition of NAC
One of the first questions from the audience was about barriers to NAC adoption. One of the vendors replied with the question “what does NAC mean to you?” This person wanted NAC to do machine based authentication with no posture assessment. The next speaker wanted user authentication and posture assessment. A third was looking for post-connect NAC, *cough* IPS *cough*. Yet another wanted machine based authentication followed by user authentication. There was also discussion of machine provisioning on the network based on an HR event. As we have heard before, the definition of NAC is a moving target.

2. Lack of executive buy-in kills
No big revelation here. Without proper senior management participation, understanding and approval almost any initiative will fail. What is interesting is the fact that within this group the challenge of selling NAC to upper management seemed to be more of a barrier to deployment than cost or complexity, the ones usually cited. My guess is that NAC may be an organizational or cultural challenge that is more common in “academic” environments where people may be used to doing what they want with less oversight. That is just a guess on my part. Cost was not mentioned once as an issue.

3. 802.1x is still a long way out for wired deployments
Most security professionals will agree that 802.1x authentication is the preferred enforcement mechanism for NAC. IP’s can be changed, MAC’s can be spoofed but digital certificates pose a formidable challenge to forge. All 3 vendors said that in their experience 90% of wireless NAC deployments use 802.1x. The reason cited was ease of configuration on the client side and general wider acceptance of the protocol. On the wired side that equation was reversed with only 10% deploying 802.1x. Supplicant issues and the prevalence of devices that may not be able to have a supplicant (printers, VOIP phones, etc.) were said to be big issues.

4. Support for non-Windows clients still developing
The majority of the audience organizations have significant numbers of non-Windows clients, specifically Mac’s. We get it. Windows is on 90 something percent of the enterprise desktops. That number is changing. More and more companies are offering choices on the desktop / laptop. The NAC vendors present had different levels of support for non-Windows. Some could do authentication only and some could do posture checking if the NAC device was in-line. Note to NAC vendors: Mac support is not a nice to have any more. Mac will have an ever increasing presence on the desktop. The NAC options should be the same for Windows and non-Windows. I do recognize that Linux is a little more of a challenge due to the variants and much further behind Mac in the desktop OS race.

Some of the other take-aways were:
Make sure you have an accurate inventory of network connected devices
Do not underestimate the increased help desk utilization
Automated remediation is not as common as self-remediation in deployments

Those were the ones worth mentioning. Let me know if any of these jump out at you.

–Chris

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Record IM video on the network? http://www.infosecpodcast.com/2008/07/record-im-video-on-the-network/ http://www.infosecpodcast.com/2008/07/record-im-video-on-the-network/#comments Tue, 01 Jul 2008 15:23:03 +0000 Chris Harrington AIM videoMSN Messengerrecord http://www.infosecpodcast.com/?p=183 A friend of mine is works in the financial services market. His company has a need to record Instant Messenger video sessions (think AOL and MSN webcam ) and archive them. They need to do this on the network as opposed to having client software do it locally on the desktop. This is due to the varied desktop systems, only half are Windows based.

Anyone know of a commercial solution or open source libraries that could do this? I know many IPS’ can detect IM video but he needs to record. Is IM video even encrypted? Before you start with the privacy concerns this is done with full knowledge of both parties who are also employees of the same company. It is a pilot program at this point.

–Chris

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WoW adds 2 factor authentication http://www.infosecpodcast.com/2008/07/wow-adds-2-factor-authentication/ http://www.infosecpodcast.com/2008/07/wow-adds-2-factor-authentication/#comments Tue, 01 Jul 2008 15:12:23 +0000 Chris Harrington 2 form factorworld of warcraftwow http://www.infosecpodcast.com/?p=181

World of Warcraft creator Blizzard Entertainment is selling hardware security devices. These small devices can fit on a key ring and provide a second form factor for authentication using something similar to a one time pad. The cost…..6 EUR. Robert over at Errata Security has a pretty good write up on it.

Now if only my bank could figure this out. Wait a minute….don’t they have to under PCI?? :)

–Chris

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New blog theme http://www.infosecpodcast.com/2008/06/new-blog-theme/ http://www.infosecpodcast.com/2008/06/new-blog-theme/#comments Thu, 26 Jun 2008 15:06:09 +0000 Chris Harrington http://www.infosecpodcast.com/?p=180 I’ve been working on a new theme for the blog. Please let me know what you think of the new theme!

Thanks!

–Chris

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Twitter + Security = Security Twits http://www.infosecpodcast.com/2008/06/twitter-security-security-twits/ http://www.infosecpodcast.com/2008/06/twitter-security-security-twits/#comments Thu, 26 Jun 2008 14:29:12 +0000 Chris Harrington SecuritySecurity TwitsTwitter http://www.infosecpodcast.com/?p=179 When I first read about Twitter I didn’t see much value in it for me. It wasn’t until I started using it last year when I saw the usefulness for me. Twitter is an interesting communicaiton tool. I call it a cross between an IM client and a Bulletin Board. There are a lot of informal groups that use twitter. One of them is the Security Twits.

Security Twits are people in security related jobs, companies, etc that use Twitter. We can thank Jennifer, aka Mediaphyter, for the name and the original blog post on the Twits. It’s actually a pretty impressive list of security folks using it.

If you have not tried Twitter you should. You may just find it useful if not downright addictive.

– Chris

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