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Social Networking Security Adam C. Champion and Dong Xuan CSE 4471: Information Security.

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Presentation on theme: "Social Networking Security Adam C. Champion and Dong Xuan CSE 4471: Information Security."— Presentation transcript:

1 Social Networking Security Adam C. Champion and Dong Xuan CSE 4471: Information Security

2 Outline Overview of Social Networking – On-line Social Networking – Mobile Social Networking Threats and Attacks Defense Measures

3 Online Social Networking (OSN) Online Web services enabling people to connect with each other, share information – Common friends, interests, personal info, … – Post photos, videos, etc. for others to see – Communicate via , instant message, etc. Major OSN services: Facebook, Twitter, MySpace, LinkedIn, etc.

4 “Giving people the power to share and make the world more open and connected.”

5

6 OSN Popularity Over 900 million Facebook users worldwide [6] – Over 150 million in U.S. [5] – Over 450 million access via mobile [6] – 300 million pictures uploaded to Facebook daily [6] Over 140 million Twitter users; over 340 million Tweets sent daily [7] Over 175 million LinkedIn members in over 200 countries [8]

7 Benefits of OSN Communication Vast majority of college students use OSNs – Organizations want to market products, services, etc. to this demographic – OSNs can help them reach these potential buyers OSNs provide communal forum for expression (self, group, mass), collaboration, etc. – Connect with old friends, find new friends and connect – Play games with friends, e.g., Mafia Wars, Scrabulous – Commerce in “virtual items” But using OSNs poses security issues for orgs as well as individuals

8 Mobile Social Networking E-SmallTalker E-Shadow 8

9 Application Scenario: Conference

10 Small Talk People come into contact opportunistically Face-to-face interaction – Crucial to people's social networking – Immediate non-verbal communication – Helps people get to know each other – Provides the best opportunity to expand social network Small talk is an important social lubricant – Difficult to identify significant topics – Superficial 10

11 A Naive Approach of Smartphone- based Small Talk Store all user’s information, including each user’s full contact list User report either his own geo-location or a collection of phone IDs in his physical proximity to the server using internet connection or SMS Server performs profile matching, finds out small talk topics (mutual contact, common interests, etc.) Results are pushed to or retrieved by users 11

12 However…… Require costly data services (phone’s internet connection, SMS) Require report and store sensitive personal information in 3 rd party Trusted server may not exist Server is a bottleneck, single point of failure, target of attack 12

13 E-SmallTalker – A Fully Distributed Approach No Internet connection required No trusted 3 rd party No centralized server Information stored locally on mobile phones Original personal data never leaves a user’s phone Communication only happens in physical proximity 13

14 E-Shadow Enhanced E-SmallTalker – Local profiles – Mobile phone based local social interaction tools E-Shadow publishing E-Shadow localization

15 Outline Overview of Social Networking Threats and Attacks Defense Measures

16 OSN Security Threats/Attacks Malware distribution Cyber harassment, stalking, etc. Information “shelf life” in cyberspace Privacy issues: – Information about person posted by him/herself, others – Information about people collected by OSNs Information posted on OSNs impacts unemployment, insurance, etc. Organizations’ concerns: brand, laws, regulations

17 MSN Security Threat/Attacks Personal information leakage – Particularly dangerous because of physical proximity Malware distribution 17

18 Outline Overview of Social Networking Threats and Attacks Defense Measures

19 “Common Sense” Measures (1) Use strong, unique passwords Provide minimal personal information: avoid entering birthdate, address, etc. Review privacy settings, set them to “maximum privacy” – “Friends of friends” includes far more people than “friends only” Exercise discretion about posted material: – Pictures, videos, etc. – Opinions on controversial issues – Anything involving coworkers, bosses, classmates, professors – Anything related to employer (unless authorized to do so) Be wary of 3 rd party apps, ads, etc. (P.T. Barnum’s quote) Supervise children’s OSN activity

20 “Common Sense” Measures (2) “If it sounds too good to be true, it probably is” Use browser security tools for protection: – Anti-phishing filters (IE, Firefox) – Web of Trust (crowdsourced website trust) – AdBlock/NoScript/Do Not Track Plus Personal reputation management: – Search for yourself online, look at the results… – Google Alerts: s sent daily to you about results for any search query (free), e.g., your name Extreme cases: – Cease using OSNs, delete accounts – Contact law enforcement re. relentless online harassment

21 E-SmallTalker: Privacy-Preserved Information Exchange Example of Alice’s Bloom filter Alice has multiple contacts, such as Bob, Tom, etc. Encode contact strings, mber, such as and ” mber 21

22 E-Shadow: Layered Publishing Spatial Layering – WiFi SSID at least meters, 32 Bytes – Bluetooth Device (BTD) Name 20 meters, 2k Bytes – Bluetooth Service (BTS) Name 10 meters, 1k Bytes Temporal Layering – For people being together long or repeatedly – Erasure Code

23 Final Remarks On-line social networking systems are very popular and mobile social networking systems are emerging Malware distribution and personal information leakage are two most prominent threats and attacks Personal countermeasures are most effective

24 References (1) 1.G. Bahadur, J. Inasi, and A. de Carvalho, Securing the Clicks: Network Security in the Age of Social Media, McGraw-Hill, New York, H. Townsend, 4 Jun. 2010, presentations/SIRT_roundtable-RisksofSocialNetworking-Jun10.ppthttp://www.k-state.edu/its/security/training/roundtables/ presentations/SIRT_roundtable-RisksofSocialNetworking-Jun10.ppt 3.U.S. Dept. of State, “Social Networking Cyber Security Awareness Briefing,” 4.National Security Agency, “Social Networking Sites,” 5.Consumer Reports, Jun. 2012, facebook-your-privacy/index.htmhttp://www.consumerreports.org/cro/magazine/2012/06/ facebook-your-privacy/index.htm 6.S. Sengupta, 14 May 2012, to-turn-data-trove-into-investor-gold.html?_r=1&pagewanted=allhttp://www.nytimes.com/2012/05/15/technology/facebook-needs- to-turn-data-trove-into-investor-gold.html?_r=1&pagewanted=all 7.T. Wasserman, 21 Mar. 2012, 8.LinkedIn Corp., 2012, 9.R. Richmond, “Web Gang Operating in the Open,” 16 Jan. 2012, https://www.nytimes.com/ 2012/01/17/technology/koobface-gang-that-used-facebook-to-spread-worm-operates-in-the- open.html?_r=1https://www.nytimes.com/ 2012/01/17/technology/koobface-gang-that-used-facebook-to-spread-worm-operates-in-the- open.html?_r=1

25 References (2) 10.J. Drömer and D. Kollberg, “The Koobface malware gang – exposed!”, 2012, 11.Wikipedia, https://en.wikipedia.org/wiki/Suicide_of_Megan_Meierhttps://en.wikipedia.org/wiki/Suicide_of_Megan_Meier 12.M. Schwartz, “The Trolls Among Us,” 3 Aug. 2008, https://www.nytimes.com/2008/08/03/ magazine/03trolls-t.html?pagewanted=allhttps://www.nytimes.com/2008/08/03/ magazine/03trolls-t.html?pagewanted=all 13.M. Raymond, “How Tweet It Is!: Library Acquires Entire Twitter Archive,” 14 Apr. 2010, 14.B. Borsboom, B. van Amstel, and F. Groeneveld, “Please Rob Me”, 15.D. Love, “13 People Who Got Fired for Tweeting,” 16 May 2011, 16.C. Smith and C. Kanalley, “Fired Over Facebook: 13 Posts That Got People Canned,” 17.https://twitter.com/BPglobalPRhttps://twitter.com/BPglobalPR 18.http://curl.haxx.se/http://curl.haxx.se/ 19.http://jonathonhill.net/ /unshorten-urls-with-php-and-curl/http://jonathonhill.net/ /unshorten-urls-with-php-and-curl/ 20.http://www.securingsocialmedia.com/resources/http://www.securingsocialmedia.com/resources/


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