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Windows Tracks CDs & DVDs You Watch
lcypher writes "The AP is reporting that
there is spyware within Windows Media Player
8(which ships with XP), which records the song
titles and DVD titles that a user listens to or views in WMP8. Microsoft execs claim no marketing use right now, but they won't rule it out. "
This looks like less of a big deal than the article
makes it out to be, but it definitely could be used
for evil.
Or .. get a firewall that detects and controls net-bound data.
www.zonealarm.com has a great free firewall program that prevents mplayer (and others) from misbehaving.
Yup, logs into a database, gives them an ID based on your computer, your IP, and the multimedia your viewing, also leaves a nice log file on your PC of your activity.
So no, its a little more than just a mirror of a CDDB database. The traffic is bi-directional, and leaves a log trail.
-
I was so naive as a kid I used to sneak behind the barn and do nothing. - Johnny Carson
May I make a few small suggestions?
It doesn't go to Microsoft, it's just a cache of CDDB lookups you've done. AudioCatalyst does the same thing - but it's tracking not only what you play, but also what you rip to MP3. Surely, if you are looking for a conspiracy, that is where to look?
This cache is just a performance enhancement, like your web browser maintaining a cache of pages you've visited. If anything, it improves your privacy: it makes it much more difficult for CDDB to track how often you play a particular CD.
From the article:
It basically stacks up cd details until you get on-line and then downloads the track listings for all the CD's in one go.
Whilst this doesn't sound much to your average connected American, here in the UK where broadband is stupidly expensive and the majority of us are on pay by the minute 56k modems its an absolute godsend because we don't have to keep dialing up every single time we put a new CD in.
Avantslash - View Slashdot cleanly on your mobile phone.
Curse this Moz build... damn testing only binaries... :)
The links:
Here's his page on the topic;
Bugtraq post
Microsoft's response.
"None are more hopelessly enslaved than those who falsely believe they are free." -- Goethe
You are wrong, Media Player is sending a globally unique ID to a MS server, along with a fingerprint of the DVD you are watching. This GUID is associated with an email address if you signed up for their newsletter, and also the newsletter encourages you to register for a Passport account.
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s @computerbytesman.com&
a te/QueryDVDTOC_v3.xml?
n se.htm
d owsxp.asp t ware/v8/privacy.asp m c ywatch/repo rt.asp?id=62&action=0 i e.htm Video Privacy Protection Act
e mo .htm
Here was the original BugTraq post that started this all. Read carefully.
Serious privacy problems in Windows Media Player for Windows XP by Richard M. Smith
http://www.ComputerBytesMan.com
February 20, 2002
Introduction
============
I found a number of serious privacy problems with Microsoft's Windows Media Player (WMP) for Windows XP. A number of design choices were made in WMP which allow Microsoft to individually track what DVD movies consumers are watching on their Windows PC. Thesep problems which introduced in version 8 of WMP which ships preinstalled on all Windows XP systems.
In particular, the privacy problems with WMP version 8 are: - Each time a new DVD movie is played on a computer, the WMP software contacts a Microsoft Web server to get title and chapter information for the DVD. When this contact is made, the Microsoft Web server is giving an electronic fingerprint which identifies the DVD movie being watched
and a cookie which uniquely identifies a particular WMP player. With this two pieces of information Microsoft can track what DVD movies are being watched on a particular computer. - The WMP software also builds a small database on the computer hard
drive of all DVD movies that have been watched on the computer. - As of Feb. 14, 2002, the Microsoft privacy policy for WMP version 8 does not disclose that the fact that WMP "phones home" to get DVD title
information, what kind of tracking Microsoft does of which movies consumers are watching, and how cookies are used by the WMP software and the Microsoft servers. - There does not appear to be any option in WMP to stop it from phoning home when a DVD movie is viewed. In addition, there does not appear any
easy method of clearing out the DVD movie database on the local hard drive.
Technical Details
=================
When a DVD movie is played by the WMP, one of the first thing that WMP does is to query via the Internet a Microsoft server for information about the DVD. The query is made using the standard HTTP protocol that is also used by Web browsers like Internet Explorer or Netscape Navigator. Using a packet sniffer I was able to observe WMP making these queries to a Microsoft server each time a new DVD movie was played. The packet sniffer also showed the movie information which was returned to WMP by the Microsoft servers.
The first HTTP GET request sent by WMP identified the movie being played.
For example, an HTTP GET request is made for this URL for the "Dr. Strangelove" DVD: http://windowsmedia.com/redir/QueryTOC.asp?WMPFri
version=8.0.0.4477&
cd=1E
15812+16C5D+1A04F+1BF2D+1ECB7+212E1+
2D0E6+2F451+38367+3CF64+4A4D6+4C001+4
The hex numbers at the end of the URL are an electronic fingerprint for the DVD table of contents which uniquely identify the "Dr. Strangelove" DVD. This URL is sent to WindowsMedia.com, Microsoft's Web site dedicated to the WMP software. The HTTP GET request also included a ID number in cookie which uniquely identifies my WMP player.
Here's what this cookie looks like: MC1=V=2&GUID=CA695830BB504D399B9958473C0FF086
By default, this cookie is anonymous. That is, no personal information is associated with the cookie value. However, if a person signs up for the Windows Media newsletter, their email address will be associated
with their WindowsMedia.com cookie.
For example, when I signed for the Windows Media newsletter, the following URL was sent to Microsoft servers: http://windowsmedia.com/mg/Newsletter.asp?eNws=rm
format=HTM
The same windowsmedia.com cookie value will be sent back to Microsoft servers when signing up for the newsletter and when a DVD moive is played. In addition, using various well-known "cookie synch" tricks, an email address can be associated with a cookie value at any time. Also when subscribing to the Windows Media newsletter, I was encouraged
by an email message from the Microsoft newsletter department to create a Passport account based on my email address. In theory, yet more personal information from Passport could be matched with what DVD movies I have
watched. There is no evidence however that Microsoft is making this connection. The WindowsMedia.com cookie was assigned to my computer the first time I ran WMP. The lifetime of the cookie was set to about 18 months. This cookie gives Microsoft the ability to track the DVD movies that I watch
on my computer.
After a series of redirects from the WindowsMedia.Com server, information about the "Dr. Strangelove" movie was returned in this XML file: http://services.windowsmedia.com/amgvideo_a/templ
TOC=90a1b0d1571524ea
WMP extracted movie information from this file and then added this information to a database file, named wmplibrary_v_0_12.db, which is located on my hard disk in the directory " C:\Documents and Settings\All
Users\Application Data\Microsoft\Media Index". I didn't see any method
of removing movie information from this file, so it appears to me that the file keeps a complete record of all movies watched that have ever been watched on my computer. Because as of Feb. 14, 2002 the Windows Media privacy policy is silent about what is done with DVD information sent to Microsoft servers by the WMP software, we can only speculate what Microsoft is doing with the
information. Here are some possibilities: - Microsoft can be used DVD title information for direct marketing purposes. For example, the WMP start-up screen or email offers can be
customized to offer new movies to a WMP user based on previous movies they have watched. - Microsoft can be keeping aggregrate statistics about what DVD movies are the most popular. This information can be published as weekly or monthly "top ten" lists. - Microsoft might be doing nothing with the DVD information. (In my discussions with Microsoft, I was told this option is their current practice.) Note: The Video Privacy Protection Act of the United States prevents
video rental stores from using movie titles for direct marketing purposes. The letter of this law does not apply to Microsoft because
they are not a video rental store. However, clearly the spirit of the law is that companies should not be using movie title information for marketing purposes.
Recommendations
===============
I believe that the Microsoft should remove the DVD movie information feature from WMP version 8 altogether. The value of feature seems very small given that almost all DVD movies include a built-in chapter guide.
In addition, the Microsoft movie information feature is not available when DVD movies are shown in full-screen which is how DVD are typically watched. If Microsoft feels that this feature is important to leave in WMP, then I think it should be turned off by default. The feature can be made privacy-friendly very easily, by having WMP never send in cookie information with movie title requests. This change will prevent
Microsoft from tracking individual movie viewing choices.
Vendor Response
===============
Response from the Windows Digital Media Division of Microsoft Corporation is available here: http://www.computerbytesman.com/privacy/wmp8respo
Acknowledgements
================
Thanks to Ian Hopper of the Associated Press for bringing this issue to the attention of the author.
Links
=====
Digital Media in Windows XP
http://www.microsoft.com/windows/windowsmedia/win
Media Player for Windows XP Privacy Statement
http://www.microsoft.com/windows/windowsmedia/sof
The RealJukeBox monitoring system
http://www.computerbytesman.com/privacy/realjb.ht
TiVo's Data Collection and Privacy Practices
http://www.privacyfoundation.org/priva
Internet Explorer SuperCookies bypass P3P and cookie controls
http://www.computerbytesman.com/privacy/supercook
http://www.accessreports.com/statutes/VIDEO1.htm
Bill Gate's memo on Trustworthy computing:
http://www.computerbytesman.com/security/billsm
Sorry but it isn't just a CDDB cache at all if you bothered to scan through the database you will find every mp3 you have ever played in Media Player listed.
Check it out for yourself the log can be located here:
C:\Documents and Settings\All Users\Application Data\Microsoft\Media Index\wmplibrary_v_0_12.db
the "_v_0_12" part may vary on your PC but this is the file mentioned in the article.
How to disable this feature:
The file, wmplibrary_v_0_12.db, contains in cleartext the name of every movie you've ever watched with media player. The names are in cleartext but each byte is spaced out with a pad byte, so you can't just grep for the names you're looking for.
If you delete the file, WMP regenerates it on use.
But, if you create the file as a zero-byte file, WMP does not fix it and does not store any information about what WMP is playing, ripping, burning, etc.
Tested Today, 2/21/02, with Windows 2000 and WMP 7.1. Oh, they didn't mention it's not just XP? It's not just XP.
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