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資料視覺化與知名行動通訊APP之安全性疑慮
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Shouko
October 31, 2014
Technology
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資料視覺化與知名行動通訊APP之安全性疑慮
台大資管系 Innovation Café
Shouko
October 31, 2014
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Transcript
資料視覺化與 知名⾏行動通訊APP之安全性疑慮 翔⼦子 @ Innovation Café, NTU IM Fall 2014
About Me 虞翔皓 (翔⼦子) 台⼤大資管系 B02 台⼤大開源社 副社⾧長 興趣: Web,
Security 網站: http://shouko.tw
Mobile Instant Messaging App Market 調查機構 Ovum 預測 經⾏行動通訊App傳送的訊 息數將由2013年的27.5兆
則成⾧長到71.5兆則 year messages (in trillion) Ovum: “Social Messaging” Apps Not Just a Fad, Will Reach Two Billion User Mark by End of 2014 http://www.trutower.com/2013/11/29/ovum-instant-messaging-app-market-growth-2013-and-2014/
“Chat with random strangers” Apps
“Chat with random strangers” Apps
About BeeTalk
• 由泰國發跡,總部設於新加坡 • 四個⽉月 達到 1000萬 使⽤用者 About BeeTalk
About BeeTalk
https://www.youtube.com/watch?v=IaKAGd4qq7g • 台灣上架⾸首⽉月使⽤用者數量達 200 萬 • ⽬目標年齡族群 18 ~ 25
歲 • 使⽤用者性別⽐比 4:6 • ⼤大規模⾏行銷廣告 About BeeTalk
Live Demo
Privacy Concerns about Location Based Services
Inspiration Where When Who
Live Demo
Observation
Observation • 觀測期間約⼀一個⽉月 • 每四⼩小時⼀一班 • 約 15 個景點
Observation • 獲得了 ~190K 筆⽤用⼾戶資料 • 獲得了 1.55M 筆座標資料
Live Demo
Analytics 性別⽐比 7 : 2
Analytics
Future • 更多過濾條件 • 更多呈現⽅方式 • 更有效率的搜尋 • ⾃自動化採集資料
Suggestions • 降低精度 • 修剪傳送的 location data • 添加 random
offset ⾄至資料 • local database 加密處理 • 使⽤用 geohash 編碼
One more thing
One more thing