Locating Tor hidden services using a multimedia search engine

Postgraduate Thesis uoadl:1957187 608 Read counter

Unit:
Κατεύθυνση / ειδίκευση Θεωρητική Πληροφορική (ΘΕΩ)
Πληροφορική
Deposit date:
2017-10-03
Year:
2017
Author:
Dova Filitsa
Supervisors info:
Λάζαρος Μεράκος, Καθηγητής, Τμήμα Πληροφορικής και Τηλεπικοινωνιών, ΕΚΠΑ
Original Title:
Εύρεση κρυμμένων υπηρεσιών Tor με χρήση μηχανής αναζήτησης πολυμέσων
Languages:
Greek
Translated title:
Locating Tor hidden services using a multimedia search engine
Summary:
Tor is a worldwide network that allows people to browse the Internet anonymously. Additionally, it provides hidden services that allow users to publish websites and services without revealing their location or identity. It was designed to give freedom of speech and a chance to avoid Internet censorship to millions of people around the world. On the other hand, Tor’s anonymity attracts suspicious and illegal activities, such as black market drugs, illegal firearms and extreme pornography.
In order to clean Tor’s content and get countermeasures, the discovery of illegal services is required. To enumerate all illegal services, search engines can prove to be a valuable tool. Nevertheless, traditional search engines only rely on text and their results are limited by the keyword similarity. Document search engines cannot be effective enough, due to the fact that in Tor, a special set of non-standard words is being used, in order to obscure the meanings of texts. Hence, we introduce a multimedia search engine, which aids the discovery of illegal services based on the multimedia they host.
Main subject category:
Technology - Computer science
Keywords:
image, multimedia, hashing, crawl, spider
Index:
Yes
Number of index pages:
5
Contains images:
Yes
Number of references:
16
Number of pages:
44
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