Mobile Computing - Security Issues - Advisor : Dr. Celeste Team Number : 6 941633 張耕瑋 941634 黃峻亨 941636 楊銘鴻 941641 李昌諭 941718 吳政穎 941635 陳建廷.

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Presentation transcript:

Mobile Computing - Security Issues - Advisor : Dr. Celeste Team Number : 張耕瑋黃峻亨楊銘鴻李昌諭吳政穎陳建廷

 Introduction to Mobile Computing  Security Issues of Mobile Computing  Security Policies  Security Prevent  Applications and Enterprise Case

 Definition ◦ Mobile computing & Ubiquitous computing  Features ◦ Technical and other limitations of mobile computing  Insufficient bandwidth  Security standards  Power consumption  Transmission interferences  Potential health hazards  Human interface with device 。 Wireless communication and network

Data is cited from

 Security is major issue ◦ Protection of Mobile Devices ◦ Software Security – program vulnerabilities ◦ Security Protocols - authentication  Different architecture has different security vulnerabilities

 Common security threat in wireless network can be categorized into two types: ◦ Passive - difficult to detect ◦ Active – possible to detect

 Interception  Modification  Fabrication  Interruption

 Virus and Worms  Denial of Service  Intrusion

 911 Virus 911 Virus  PalmOS/LibertyCrack PalmOS/LibertyCrack

 Security policies!  Symbian: Protect your data, not just your device  Technical support

 Confidentiality  Integrity  Availability  Authorization  Dependability and Reliability  Accountability

 A process when devices be stole  Security policy between wired network and wireless network  A mechanism to manage carrier who has secret data  Standard to control virus, worm…  Hierarchy certificate mechanism

 Information security  Network security  Device security  People training

 Hotspot ◦ Hotspot is the location supply LAN that is open for public. ◦ Data transfer don’t encrypt.  Hotspot Security ◦ Establish system to prevent fake Hotspot Service ◦ Turn off the Ad-hoc network mode ◦ Don’t set auto-connect to AP ◦ Pre-set to use VPN  Mobile Computing Security ◦ Don’t use trusted network and un-trusted network at same time

Types of Attack Interception Fabrication Interruption Modification Prevention Encrypt Signature + CA Digital Signature

TEK exchange SS BS authentication information X.509 certificate authorization request X.509 certificate, capability, Basic CID authorization reply encrypted AK, SAIDs, SQN AK,… AK exchange key request SAID, HMAC-Digest,… key reply encrypted TEK, CBC IV, HMAC-Digest,… Data exchange( encrypt by TEK)

 Encrypt  Separate risks  Firewall  Redact

 EFS (Encrypting file system) symmetric encryption:asymmetric encryption :

 Two-factor authentication + Or others : passwordIC Card

Server Notebook CD-Rom USB flash drive

coping sensitive record into removable disk before employees carry documents out Sensitive data Employees Document

 Notebook computer  PDA Enterprise case

 Beginning of Mobile Phone Virus  Recent Viruses  The Way Viruses Infect  Problems of Anti-Virus

 Wikipedia    Security in Distributed, Grid, Mobile, and Pervasive Computing by Yang Xiao  

Thank you for listening!