ACM Hypertext 2011Eindhoven, June 6-9                      Daniel Gayo-Avello @PFCdgayo
Image by robjewitt
Picture by photogirl7.1
Picture by photogirl7.1
EVERYBODY   OSNs
users
brands & companiesusers
brands & companiesnews media  users
celebrities                    brands & companiesnews media  users
marketers    celebrities                    brands & companiesnews media  users
marketers    celebrities                    brands & companiesnews media                            spammers  users
marketers    celebrities                    brands & companiesnews media                            spammers  users       ...
Twitter/Facebook research                    500                    450                    400                    350 Numb...
name               location   biography
sex                       locationpolitical view
not a real name         not a location    useless biography
problem!
sink node
threshold
in a tweet…         “it’s not what you disclose                     about yourself,      it’s what your friends disclose  ...
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
All Liaisons Are Dangerous When All Your Friends Are Known to Us
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All Liaisons Are Dangerous When All Your Friends Are Known to Us

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Online Social Networks (OSNs) are used by millions of users worldwide. Academically speaking, there is little doubt about the usefulness of demographic studies conducted on OSNs and, hence, methods to label unknown users from small labeled samples are very useful. However, from the general public point of view, this can be a serious privacy concern. Thus, both topics are tackled in this paper: First, a new algorithm to perform user profiling in social networks is described, and its performance is reported and discussed. Secondly, the experiments --conducted on information usually considered sensitive-- reveal that by just publicizing one's contacts privacy is at risk and, thus, measures to minimize privacy leaks due to social graph data mining are outlined.

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Transcript of "All Liaisons Are Dangerous When All Your Friends Are Known to Us"

  1. 1. ACM Hypertext 2011Eindhoven, June 6-9 Daniel Gayo-Avello @PFCdgayo
  2. 2. Image by robjewitt
  3. 3. Picture by photogirl7.1
  4. 4. Picture by photogirl7.1
  5. 5. EVERYBODY OSNs
  6. 6. users
  7. 7. brands & companiesusers
  8. 8. brands & companiesnews media users
  9. 9. celebrities brands & companiesnews media users
  10. 10. marketers celebrities brands & companiesnews media users
  11. 11. marketers celebrities brands & companiesnews media spammers users
  12. 12. marketers celebrities brands & companiesnews media spammers users researchers
  13. 13. Twitter/Facebook research 500 450 400 350 Number of papers 300 250 title 200 abstract 150 100 50 0 2000 2001 2003 2004 2005 2006 2007 2008 2009 2010Source: Search of ACM Digital Library papers mentioning twitter or facebook
  14. 14. name location biography
  15. 15. sex locationpolitical view
  16. 16. not a real name not a location useless biography
  17. 17. problem!
  18. 18. sink node
  19. 19. threshold
  20. 20. in a tweet… “it’s not what you disclose about yourself, it’s what your friends disclose about themselves.” @PFCdgayo

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