• Chalee
    Chalee
    November 16, 2012 at 9:26 am #1502

    Project I: 0% Spam Email System

    “Polite Sender”: A Greener Spam Email Countermeasure based on Sender Responsibilities and Recipient Justifications

    Currently, most of the existing spam countermeasures are deployed on the email recipient side. However, they cannot diminish the amount of wasteful traffic sent from the SMTP server and the wasteful data storage in the receiver’s inbox incurred by spam emails. This project presents an alternative approach on the sender side in order to overcome these problems and create a bandwidth-saving and reduced-storage email system. Additional functions are added to the SMTP server on the sender side to examine whether should allow the particular email sender. If a proper authorization from the recipient has not been granted, the sending SMTP server will not forward the full email message. Instead, it sends the email header together with some additional inquiries for the recipient to authorize this particular sender. Once the authorization is granted, each pair of a given sender and receiver will be kept in a whitelist at the sending SMTP server. The proposed approach can be easily deployed without modifying the existing SMTP protocol stack.

    Outputs
    – Prototype 0% spam email system
    – Published paper

    Project II: Anonymity Framework

    Preserving Anonymity of Context-aware Location-based Services

    Privacy has become an important goal in designing location-based services. Service providers want to verify legitimate users and allow permitted users to enjoy their services. Users, however, want to preserve their privacy from being tracked. In this project, a new framework providing users with more privacy and anonymity in both authentication and querying process is proposed. Unlike the existing works, our framework benefits from a combination of three important techniques: k-anonymity, timed-fuzzy logic and one-way hash function. Using these existing schemes with some adding and adaptation, it gives us simpler solution, less complexity, and yet maturity. During authentication, the one-way hash function provides users with more privacy by using fingerprints of users’ identities. To provide anonymous authentication, the concept of confidence level is adopted with timed-fuzzy logic. Regarding location privacy, spatial k-anonymity prevents the users’ location from being tracked. The proposed framework is expected to strengthen anonymity and privacy to a user by consuming a small extra implementation cost, in addition to functionality improvement.

    Outputs
    – Framework for preserving anonymity of context-aware location-based services
    – Published paper

    Possible partners:
    NECTEC (Thailand)
    De La Salle University (The Philippines)
    BAY Zoltan (Hungary)

    File Attachment:

    File Name: FP7Idea.doc
    File Size:64 KB

    Contact Person
    Chalee Vorakulpipat, PhD
    Researcher
    Wireless Information Security and Eco-Electronics Research Unit
    National Electronics and Computer Technology Center (NECTEC)
    National Science and Technology Development Agency (NSTDA)
    112 Thailand Science Park, Phahonyothin Road, Klong 1, Klong Luang Pathumthani 12120, THAILAND
    Tel. +66 2 564 6900 ext.2551
    Mb. +66 84 643 5750
    Email: chalee.vorakulpipat@nectec.or.th

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