Social Media Security Podcast 4 – Death by Twitter, Open Source Intelligence, Policies, Google Wave

skullThis is the 4th episode of the Social Media Security Podcast recorded November 6, 2009.  This episode was hosted by Scott Wright, Tom Eston and Kevin Johnson.  Below are the show notes, links to articles and news mentioned in the podcast:

  • More scams on Twitter including the recent IQ quiz attack.  Disinformation on social networks…someone died example..are you sure they are really dead?
  • Tom talks about his Open Source Intelligence Gathering talk that he recently gave.  How do you find information posted about your company on social networks and why should you look?  Now is probably a good time for your company to create a social media strategy and then develop a Internet postings policy around this strategy.
  • Cisco has a great Internet posting policy to reference when created one for your company.
  • Scott talks about creating a postings policy for your company.  Here is a link to the Forrester book titled “Groundswell” that talks about creating a social media strategy.
  • Kevin talks about Google Wave.  What is it and why would we want to use this?  What are some of the security issues with Google Wave?  Check out the great research that theharmonyguy has been doing on Google Wave.
  • Developers! Please start coding securely from the beginning of the project! ktksbai.
  • Be sure to follow us on Twitter to stay up-to-date on all the latest news in the world of social media security!

Please send any show feedback to feedback [aT] socialmediasecurity.com or comment below.  You can also call our voice mail box at 1-613-693-0997 if you have a question for our Q&A section on the next episode.  You can also subscribe to the podcast now in iTunes! Thanks for listening!

Social Media Security Podcast 3 – Phishing and Koobface, What is CSRF, Protected Tweets

skullThis is the third episode of the Social Media Security Podcast recorded October 23, 2009.  This episode was hosted by Scott Wright, Tom Eston and Kevin Johnson.  Below are the show notes, links to articles and news mentioned in the podcast:

  • Tom and Scott talk about phishing on social networks. How can you tell the difference between a fake friend request and a real one? Here is a screen shot of a fake friend request and a real friend request.  Just by looking at the email…it’s really hard to tell the difference isn’t it?  The only way you can tell the difference is to look at the URL the link is going to by looking at the message source (code and/or mail header info).  We advise you check your Facebook Inbox for legitimate friend requests, don’t click on friend request links in email.
  • Tom gives a primer on Koobface. What is the Koobface worm and how does it spread?  If you want to learn more about Koobface check out this very good paper created by TrendMicro on how Koobface works.
  • Kevin gives a great non-technical overview of CSRF (Cross-site request forgery).  Want to see a real CSRF attack demonstrating stealing private Facebook profile information? Check out this video and blog post.  Here is the great talk by Jeremiah Grossman about exploiting business logic flaws that Tom mentioned.
  • Interested to know more about CSRF? Check out Security Now! Episode 166.
  • Are your protected tweets able to be searched by Google?  Tom clarifies that this article was not true at all.  However, there are some important things you need to know about protected tweets and why making your Twitter account private doesn’t buy you much.
  • Due to popular demand we are going to try recording the podcast bi-weekly!
  • Be sure to follow us on Twitter to stay up-to-date on all the latest news in the world of social media security!

Please send any show feedback to feedback [aT] socialmediasecurity.com or comment below.  You can also call our voice mail box at 1-613-693-0997 if you have a question for our Q&A section on the next episode.  You can also subscribe to the podcast now in iTunes! Thanks for listening!

Should you use Twitter for Online Banking?

Today, a credit union in St. Louis, MO called Vantage Credit Union announced that they are offering a service through Twitter called tweetMyMoney to conduct online banking.  Banking credentials, PINs and account information are not passed through tweets made via direct message to the @myvcu Twitter account (from the FAQ listed on the bank’s website), only commands to get account balance, recent transactions, etc.

However, there are a few potential security issues/concerns with this type of service.  While it seems that VCU has made this system with good intentions, most of these concerns center around the fact that you are putting in requests for account information and even transferring money to other accounts through Twitter which is a third-party service not owned or managed by the bank.

  • Plain and simple, Twitter is a third-party service.  When you send a direct message (DM) to another Twitter user this message is stored on Twitter’s servers.  Not the banks.  The bank is simply retrieving these messages.  You should never have any expectation of privacy from DMs *at all*.  Sure, they are “private” to you and the user you are sending it to but think about who on Twitter’s end might be able to view these DMs.  Remember, security at Twitter is not very important currently as we have seen several times in very recent history.
  • What about the scenario of a local “man-in-the-middle” attack where someone could be sniffing your network traffic to modify your banking requests?  A simple attack like this could easily compromise the users Twitter account.  Guess what, people like to reuse user id’s and passwords…we all know where that could lead to.  I am not sure if they are using any form of two-factor authentication for their online banking application so you may only need a login id and password to access a compromised online banking account.  Again, not sure this is the case with VCU but yes, some banks are still using single factor authentication!
  • How about the security of the @myvcu Twitter account you send your direct messages to?  Attackers *will* target this account, it’s only a matter of time.  You are trusting that the folks at VCU are properly securing this account and there are no vulnerabilities or exploits on the Twitter site to compromise the account as well.  It also looks like this account is used for communicating with customers…it could be possible that these credentials could be phished and/or compromised through multiple avenues of attack.
  • I question the correspondence authentication codes that they have put in place.  Relying on the user to change these multiple codes is an interesting choice.  I could see this being spoofed quite easily.
  • Lastly, the users of this system could also be targeted if say a user accidentally tweeted something like “#l5d 7” to their followers instead of by DM (known as #dmfail)?  Attackers can easily script a bot to look for these patterns and target these users.

I don’t want to knock the folks at VCU as it seems that they are a very “progressive” bank and it looks like they want to push the envelope of new technology.  My opinion is that it just seems that there are too many points of security “fail” in this system.  Potential failures in the Twitter service, @myvcu account and Twitter users of the VCU system in addition to the third-party privacy concerns all make for something that you shouldn’t be trusting your online banking to.  Social networks are not for online banking in any form…srsly.

Thanks to @rogueclown and @nickhacks for the tweets and comments about this new service.

A Closer Look at Twitter’s New Terms of Service

On September 10th Twitter released a new Terms of Service (ToS) that you as a user of Twitter should be aware of.  Some of the changes related to privacy and security are noted below with my comments in bold:

  • The Content you submit, post, or display will be able to be viewed by other users of the Services and through third party services and websites. 
    This should be obvious but by using Twitter you should have no expectation of privacy at all (even with a “private” profile).
  • In consideration for Twitter granting you access to and use of the Services, you agree that Twitter and its third party providers and partners may place such advertising on the Services or in connection with the display of Content or information from the Services whether submitted by you or others. 
    Twitter has to make money somehow so don’t be shocked when you see ad’s being generated based on the content of your tweets.

  • You are responsible for safeguarding the password that you use to access the Services and for any activities or actions under your password. We encourage you to use “strong” passwords (passwords that use a combination of upper and lower case letters, numbers and symbols) with your account. Twitter cannot and will not be liable for any loss or damage arising from your failure to comply with the above requirements. 
    This shouldn’t be a surprise either.  If your password gets owned by a hacker, Twitter is not responsible.  However, I still think that Twitter should require stronger passwords on their end.
  • You understand that by using the Services, you may be exposed to Content that might be offensive, harmful, inaccurate or otherwise inappropriate, or in some cases, postings that have been mislabeled or are otherwise deceptive. 
    Disinformation is a popular tactic on Twitter used by spammers as well as people that want to spread incorrect information about news and other topics.  Twitter is not responsible for this type of behavior.  You don’t believe *everything* you read on Twitter right? :-)
  • By submitting, posting or displaying Content on or through the Services, you grant us a worldwide, non-exclusive, royalty-free license (with the right to sublicense) to use, copy, reproduce, process, adapt, modify, publish, transmit, display and distribute such Content in any and all media or distribution methods (now known or later developed).
    Sure, the content you post is yours but whatever you post can be modified, retransmitted, etc by Twitter and third-party apps that interact with Twitter.
  • …you have to use the Twitter API if you want to reproduce, modify, create derivative works, distribute, sell, transfer, publicly display, publicly perform, transmit, or otherwise use the Content or Services. 
    This is the reason that the Twitter API is so open and also the primary reason that spammers and other people with bad intent can take advantage of the service.
  • You may not do any of the following while accessing or using the Services: (i) access, tamper with, or use non-public areas of the Services, Twitter’s computer systems, or the technical delivery systems of Twitter’s providers; (ii) probe, scan, or test the vulnerability of any system or network or breach or circumvent any security or authentication measures…
    This is interesting to me.  So if you are a security researcher you cannot “test” Twitter for vulnerabilities.  That would include fuzzing and/or doing simple tests for XSS.  So if you find a vulnerability on Twitter and disclose it to them can they delete your account, or report you to law enforcement?  Remember kids…don’t test for vulnerabilities without permission first. :-)
  • …or (v) interfere with, or disrupt, (or attempt to do so), the access of any user, host or network, including, without limitation, sending a virus, overloading, flooding, spamming, mail-bombing the Services, or by scripting the creation of Content in such a manner as to interfere with or create an undue burden on the Services.
    The part about flooding and mail-bombing the Services relates to the recent Twitter DD0S I suspect.
  • Twitter will not be responsible or liable for any harm to your computer system, loss of data, or other harm that results from your access to or use of the Services, or any Content. You also agree that Twitter has no responsibility or liability for the deletion of, or the failure to store or to transmit, any Content and other communications maintained by the Services. We make no warranty that the Services will meet your requirements or be available on an uninterrupted, secure, or error-free basis.
    If you use Twitter (or any social network for that matter) don’t assume that it’s “secure”.  They don’t guarantee security an you shouldn’t either.  Also, if you see the Fail Whale…it’s also not guarantee of service availability. :-)

These are the main changes that I picked out related to privacy and security.  However, you should really read the full ToS as it has gotten more detailed then the previous version.  I would suspect more communication from Twitter on future changes to the ToS.

Social Media Security Podcast 1 – Zombies, Bad Facebook Apps, Twitter SPAM

skullThis is the first episode of the Social Media Security Podcast.  This episode was hosted by Scott Wright and Tom Eston.  Below are the show notes, links to articles and news mentioned in the podcast:

Please send any show feedback to feedback[aT]socialmediasecurity.com or comment below.  You can also call our voice mail box at 1-613-693-0997 if you have a question for our Q&A section on the next episode.  Thanks for listening!

**You can subscribe to the podcast now in iTunes!

Staying Safe & Secure on Twitter

We recently added a presentation that Tom Eston did at the Cool Twitter Conference in Cleveland last week to the presentations section.  You can also find it on SlideShare.  This presentation should give you some good tips on how to use Twitter safely.  Stay tuned for a printable guide and video similar to the Facebook Privacy & Security Guide.

Tom was also interviewed by Dan Hanson from the Great Lakes Geek Show about his presentation as well as other social media security issues.

Twitter and Facebook DDoS was Targeted at One User

The following article was just posted over at CNET News regarding the massive DD0S (Distributed Denial of Service) that targeted Twitter, Facebook, LiveJournal and more.

Via CNET News:

A pro-Georgian blogger with accounts on Twitter, Facebook, LiveJournal and Google’s Blogger and YouTube was targeted in a denial of service attack that led to the site-wide outage at Twitter and problems at the other sites on Thursday, according to a Facebook executive.

Read the entire article here.

New Research Released on Koobface

Today Trend Micro released probably the most comprehensive research yet on the Koobface social network worm.  This research details how Koobface works, the malicious payloads it carries and how this worm has spread to all the major social networks.  The most recent victim being Twitter.   Most alarming is that Koobface will still continue to evolve and is the beginning of a new generation of malware targeting social networks.

Check out the article and download the PDF for the full report.  We will also have this link posted in the “Research” section of the site.

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