WO2006119508A3 - Detecting unwanted electronic mail messages based on probabilistic analysis of referenced resources - Google Patents

Detecting unwanted electronic mail messages based on probabilistic analysis of referenced resources Download PDF

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Publication number
WO2006119508A3
WO2006119508A3 PCT/US2006/017782 US2006017782W WO2006119508A3 WO 2006119508 A3 WO2006119508 A3 WO 2006119508A3 US 2006017782 W US2006017782 W US 2006017782W WO 2006119508 A3 WO2006119508 A3 WO 2006119508A3
Authority
WO
WIPO (PCT)
Prior art keywords
network resource
electronic mail
messages based
mail messages
resource identifier
Prior art date
Application number
PCT/US2006/017782
Other languages
French (fr)
Other versions
WO2006119508A2 (en
Inventor
Daniel Quinlan
Jason Kehl
Jeffrey Wescott
Original Assignee
Ironport Systems Inc
Daniel Quinlan
Jason Kehl
Jeffrey Wescott
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ironport Systems Inc, Daniel Quinlan, Jason Kehl, Jeffrey Wescott filed Critical Ironport Systems Inc
Priority to CN2006800194833A priority Critical patent/CN101558398B/en
Priority to JP2008510320A priority patent/JP4880675B2/en
Priority to CA2606998A priority patent/CA2606998C/en
Priority to EP06759351.7A priority patent/EP1877904B1/en
Publication of WO2006119508A2 publication Critical patent/WO2006119508A2/en
Publication of WO2006119508A3 publication Critical patent/WO2006119508A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
    • H04L51/21—Monitoring or handling of messages
    • H04L51/212—Monitoring or handling of messages using filtering or selective blocking
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/10—Office automation; Time management
    • G06Q10/107—Computer-aided management of electronic mailing [e-mailing]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
    • H04L51/21—Monitoring or handling of messages
    • H04L51/234—Monitoring or handling of messages for tracking messages
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/12—Applying verification of the received information
    • H04L63/123—Applying verification of the received information received data contents, e.g. message integrity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/12—Applying verification of the received information
    • H04L63/126—Applying verification of the received information the source of the received data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/14—Network architectures or network communication protocols for network security for detecting or protecting against malicious traffic
    • H04L63/1441—Countermeasures against malicious traffic
    • H04L63/145—Countermeasures against malicious traffic the attack involving the propagation of malware through the network, e.g. viruses, trojans or worms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/45—Network directories; Name-to-address mapping
    • H04L61/4505—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
    • H04L61/4511—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]

Abstract

In one embodiment, detecting unwanted electronic mail messages based on probabilistic analysis of referenced resources comprises receiving a whitelist and a blocklist each having a plurality of network resource identifiers that have appeared in prior messages; retrieving a particular network resource identifier; generating a list of properties for the particular network resource identifier; training a probabilistic filter using the properties; and repeating the retrieving, generating and training for all the network resource identifiers in the whitelist and blocklist. Thereafter, when an electronic mail message is received and contains a URL or other network resource identifier, a spam score or threat score can be generated for the message by testing properties of the network resource identifier using the trained probabilistic filter.
PCT/US2006/017782 2005-05-05 2006-05-05 Detecting unwanted electronic mail messages based on probabilistic analysis of referenced resources WO2006119508A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN2006800194833A CN101558398B (en) 2005-05-05 2006-05-05 Detecting unwanted electronic mail messages based on probabilistic analysis of referenced resources
JP2008510320A JP4880675B2 (en) 2005-05-05 2006-05-05 Detection of unwanted email messages based on probabilistic analysis of reference resources
CA2606998A CA2606998C (en) 2005-05-05 2006-05-05 Detecting unwanted electronic mail messages based on probabilistic analysis of referenced resources
EP06759351.7A EP1877904B1 (en) 2005-05-05 2006-05-05 Detecting unwanted electronic mail messages based on probabilistic analysis of referenced resources

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US67839105P 2005-05-05 2005-05-05
US60/678,391 2005-05-05

Publications (2)

Publication Number Publication Date
WO2006119508A2 WO2006119508A2 (en) 2006-11-09
WO2006119508A3 true WO2006119508A3 (en) 2009-04-16

Family

ID=37308748

Family Applications (4)

Application Number Title Priority Date Filing Date
PCT/US2006/017773 WO2006122055A2 (en) 2005-05-05 2006-05-05 Method of determining network addresses of senders of electronic mail messages
PCT/US2006/017780 WO2006119506A2 (en) 2005-05-05 2006-05-05 Method of validating requests for sender reputation information
PCT/US2006/017783 WO2006119509A2 (en) 2005-05-05 2006-05-05 Identifying threats in electronic messages
PCT/US2006/017782 WO2006119508A2 (en) 2005-05-05 2006-05-05 Detecting unwanted electronic mail messages based on probabilistic analysis of referenced resources

Family Applications Before (3)

Application Number Title Priority Date Filing Date
PCT/US2006/017773 WO2006122055A2 (en) 2005-05-05 2006-05-05 Method of determining network addresses of senders of electronic mail messages
PCT/US2006/017780 WO2006119506A2 (en) 2005-05-05 2006-05-05 Method of validating requests for sender reputation information
PCT/US2006/017783 WO2006119509A2 (en) 2005-05-05 2006-05-05 Identifying threats in electronic messages

Country Status (6)

Country Link
US (6) US7836133B2 (en)
EP (2) EP1877904B1 (en)
JP (2) JP5118020B2 (en)
CN (2) CN101495969B (en)
CA (2) CA2606998C (en)
WO (4) WO2006122055A2 (en)

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