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PCSF: Privacy-Preserving Content-Based Spam Filter

Title
PCSF: Privacy-Preserving Content-Based Spam Filter
Authors
Kim, IntaeSusilo, WillyBaek, JoonsangKim, JongkilChow, Yang-Wai
Ewha Authors
김종길
SCOPUS Author ID
김종길scopus
Issue Date
2023
Journal Title
IEEE TRANSACTIONS ON INFORMATION FORENSICS AND SECURITY
ISSN
1556-6013JCR Link

1556-6021JCR Link
Citation
IEEE TRANSACTIONS ON INFORMATION FORENSICS AND SECURITY vol. 18, pp. 2856 - 2869
Keywords
Unsolicited e-mailReceiversServersPrivacyEncryptionProtocolsInformation filtersPrivacy-preservingspam filterrule-hidingoutsourcingpre-validation
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Indexed
SCIE; SCOPUS WOS
Document Type
Article
Abstract
The purpose of privacy-preserving spam filtering is to inspect email while preserving the privacy of its detection rules and the email content. Although many solutions have emerged, they suffer from the following: 1) privacy provided is insufficient as the email content or detection rules may be exposed to third parties; 2) due to improper use of encryption, exhaustive word search attacks are possible, potentially breaking the confidentiality of encrypted emails; 3) when spam filtering is outsourced, email is given to the outsource, where user privacy may be compromised if privacy protection measures are not properly put in place; 4) confirmation of whether the encrypted email is spam is only determined after the receiver receives the email, which can lead to a situation in which spam is loaded to the memory of the receiver's terminal for spam filtering. This can be harmful, for example, when an attacker inserts a web browser vulnerability into the body of an email to lure users to a phishing site simply by reading the email; 5) computationally expensive operations are unavoidable to provide required features of privacy-preserving spam filtering. We present Privacy-preserving Content-based Spam Filter (PCSF), which is a spam filter system that does not suffer from the aforementioned issues. Additionally, our system provides pre-validation before the receiver reads the email. We provide an implementation of our system based on the Naive Bayes spam filter and prove its security.
DOI
10.1109/TIFS.2023.3255172|http://dx.doi.org/10.1109/TIFS.2023.3255172
Appears in Collections:
인공지능대학 > 사이버보안학과 > Journal papers
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