THE THE VERTUALVERTUAL

Have you ever got something bad through the Internet ?

Information Revelation and Privacy in Online Social Networks

1. INFORMATION REVELATION AND　 ONLINE SOCIAL NETWORKING

2. FACEBOOK3. PRIVACY IMPLICATIONS4. CASES5. CONCLUSIONS

INFORMATION REVELATION AND 　ONLINE SOCIAL NETWORKING

• Social Network Theory and Privacy– online social networks are both vaster

and weaker ties, on average, than offline social networks

• Privacy Implications–While privacy may be at risk in social

networking sites, information is willingly provided

FACEBOOK

• Communities based “on a shared real space”

• Data Validity and Data Identifiability

• Profile Names– 1. Real Name• Name appears to be real. 89%

– 2. Partial Name• Only a first name is given. 8%

– 3. Fake Name• Obviously fake name. 3%

• Identifiability of Images on Profile– 1. Identifiable– 2. Semi-Identifiable– 3. Group Image– 4. Joke Image （ as I use ）

• Friends Networks– Friends– Friends of friends– Non-friend users at the same institution – Non-friend users at a different institution

PRIVACY IMPLICATIONS

• Stalking• Reidentification• Building a Digital Dossier• Fragile Privacy Protection

A CASE

• A 20-year-old woman stalked through the Internet and killed

CONCLUSION

I do not say you must not use SNS, which is a type of communication tools right now, but you must notice what will cause you is caused by you.

CITED• http://image.search.yahoo.co.jp/search?rkf=2&ei=UTF-8&p=%E3%82%B4%E3%83%83%E3%83%89%E3%8

2%A8%E3%83%8D%E3%83%AB - mode%3Ddetail%26index%3D6%26st%3D0• http://ord.yahoo.co.jp/o/image/SIG=12vlabmvi/EXP=1405513493;_ylc=X3IDMgRmc3QDMARpZHgDMARv

aWQDQU5kOUdjU3N1V2RKRXMzSmlmQlpocUltN3RLVENoZjQwSUdCbXhPQ3FzNGRiMFRfcW4wbUw5UDFLVXV2dDVRbQRwA1ptRmpaV0p2YjJzZzQ0T3Q0NEswBHBvcwM0BHNlYwNzaHcEc2xrA3Jy/**http:/otakei.otakuma.net/archives/2013110604.html/facebook%E3%83%AD%E3%82%B4

• http://ord.yahoo.co.jp/o/image/SIG=13nq1m8lu/EXP=1405551576;_ylc=X3IDMgRmc3QDMARpZHgDMARvaWQDQU5kOUdjUjZpbzUyNGs3MUdWekJpQ0Q4bXVuYnZLMG42UFluckJXdmxwN2FhVWk3NTRIdE45U21EbWtkQ1EEcANjSEpwZG1GamVTQnBiWEJzYVdOaGRHbHZibk0tBHBvcwMzMwRzZWMDc2h3BHNsawNycg--/**http:/www.business2community.com/tech-gadgets/byod-implications-staff-privacy-facts-fictions-0647566

• http://www.telegraph.co.uk/news/uknews/crime/10278324/Stalking-laws-lead-to-just-33-convictions-in-first-six-months.html

• http://www.google.co.jp/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0CCEQFjAA&url=http%3A%2F%2Finference-reseaux-sociaux.googlecode.com%2Ffiles%2FInformation%2520Revelation%2520and%2520Privacy%2520in%2520Online%2520Social%2520Networks%2520-%2520Document.PDF&ei=GLXFU5CTJ5fn8AWKtoDoDw&usg=AFQjCNGziPC26syGeiZMRKTTfPqIlmBWng&sig2=WeEuss6g3oy34d1srLbT8A

• http://www.suntimes.com/news/crime/4828757-418/female-found-dead-in-oak-brook.html