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WO2006051434A1 - Procede et systeme de prevention de la reception de messages electroniques non souhaites, tels que des pourriels - Google Patents

Procede et systeme de prevention de la reception de messages electroniques non souhaites, tels que des pourriels Download PDF

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Publication number
WO2006051434A1
WO2006051434A1 PCT/IB2005/053376 IB2005053376W WO2006051434A1 WO 2006051434 A1 WO2006051434 A1 WO 2006051434A1 IB 2005053376 W IB2005053376 W IB 2005053376W WO 2006051434 A1 WO2006051434 A1 WO 2006051434A1
Authority
WO
WIPO (PCT)
Prior art keywords
user
mail
address
challenge
entity
Prior art date
Application number
PCT/IB2005/053376
Other languages
English (en)
Inventor
Frits Lyneborg
Original Assignee
Frits Lyneborg
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 Frits Lyneborg filed Critical Frits Lyneborg
Priority to JP2007540754A priority Critical patent/JP2008520022A/ja
Publication of WO2006051434A1 publication Critical patent/WO2006051434A1/fr
Priority to NO20072706A priority patent/NO20072706L/no

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Classifications

    • 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
    • H04L51/212—Monitoring or handling of messages using filtering or selective blocking

Definitions

  • the present invention relates generally to the field of electronic communication networks and methods for communication in these networks, more specifically to communication by e-mail in such networks and specifically to methods and corresponding systems for preventing reception of unwanted e-mails, commonly known as SPAM.
  • US 6,266,692 B1 discloses a method for blocking unwanted e-mail using a header-based password, according to which method all senders wanting to communicate with a recipient by e-mail must be pre- approved before they can actually send an e-mail to the recipient
  • each sender is assigned an individual pass code provided by the recipient, which passed must be entered in a specified field in the header of the e-mail each time an e-maii is sent to the recipient.
  • E-mails not provided with the pass code may be held in memory at the communication network provided until the recipient unsolicitunc reception of these,. Alternatively the network provider finally deletes them.
  • An e-mail initially provided with a wrong pass code is at any rate deleted.
  • the document describes in detail how it is estimated whether an incoming e-mail is to be regarded as unwanted, which estimation requires the calculation of the probability P that an incoming mail is sent from an undesired source. The calculated probability is subsequently compared with a threshold value, which thus in a sense determines the importance of avoiding reception of unwanted e-mails. No special pass codes or other identifiers are required by the sender in this method and system.
  • This document is referring to the member as a person, organisation, company, or other entity who is corresponding by e-mail with the user.
  • SPAM refers primarily - although not exclusively - to unsolicited e-mails sent to a user for instance to promote products or services or simply to cause user annoyance, etc. It furthermore refers to inappropriate or unwanted promotional or commercial postings to discussion groups, bulletin boards or newsletters that are causing unwanted e-mail received by the user. Thus for instance all unwanted e-mail originating from a mechanically based distribution fall within the definition of SPAM in the present context.
  • the present specification uses the term SPAM as a common denominator for all unwanted electronic communication messages, etc., the reception of which a user would want to be able to avoid in a manner basically controlled by the user himself.
  • SPAMMERS Spammers are referred to as anybody (or any means, organisation, etc.) who has knowledge of the user's e-mail-address or other access information needed to obtain access to the user's electronic communication means, and either passes this address on to others, or by themselves create SPAM towards the user.
  • spammming is referred to as providing a user with unwanted e-mail or other electronic messages either originating from the said person, means or organisations themselves or routed from somewhere else via the said person, means or organisation,
  • the system is a collection of technologies, collaborating in a circle, understood as a kind of barrier surrounding the user and protecting him against the reception of SPAM.
  • the necessary electronic system is widely based on existing technologies/elements, such as the necessary servers, databases, browsers, electronic data transmission means, etc., most of which have more functionality and are more complex than the system itself.
  • the above-mentioned circle is the means created when technologies are put to work together (co-operate) with certain settings, and controlled by certain custom-made computer code.
  • This circle is the concrete part of the system.
  • the functionality of the custom-made computer code and the settings of the technologies are to be seen as the "glue” that holds the circle in place.. Using other e-mai!ing technologies would require other lines of custom-designed code, but the circle can be transferred to environments not described here.
  • the user's experience of using a system that is set up in the circle is the RESULT of the system.
  • the circle may be regarded as a closed boundary surrounding the user of the system and thereby preventing the user from receiving unwanted electronic communication items such as e-mails etc.
  • MAIL ADDRESS MAIL CHANNEL
  • an object of the present invention to provide a method and corresponding system by means of which the reception of unsolicited e-mails or other electronic communication items, such as messages sent for instance, but not exclusively to promote products or services or simply to cause user annoyance can be avoided.
  • the inventive method and system furthermore avoids reception of inappropriate or unwanted promotional or commercial postings to discussion groups and bulletin boards or newsletters that are causing unwanted e-mail or other electronic messages received by the user. As a specific consequence, reception of all unwanted e-mail that could for instance originate from a mechanically-based distribution is avoided.
  • the above object is attained by a method employing a technology where each member is assigned a unique maii-address/access address
  • the unique mail-address according to the invention could thus for instance be of the form
  • Said address or "name" of the member channel could be chosen such that it will be easy to remember for the particular member.
  • the member himself defines his own address.
  • said address could be of the form [member name][number]@[name of service providerj.com, where member name could for instance be the first name of the member.
  • Such an individual mail address is referred to as "a channel” or "mail-channel”.
  • the channel is used as "to-address” (the recipient) when a member is contacting the system, and as “from-address” (the sender) when the user is writing from the system.
  • the member will not have knowledge of the system's many other addresses, but uses/requires only one mail-address, i.e. his own assigned member channel, for instance ([member-channel]@[user name], [domain]) or ([member-channel].[user name]@[domain] when writing to the user.
  • the above objects are furthermore attained by a system for preventing a user's reception of unwanted electronic communication items such as messages from an external entity, where the system comprises:
  • a challenge/response means such as a database or other electronic processing/storage means for sending a challenge such as a question to said external entity
  • the various means comprised by the system may be provided as a part of a centrally located server for instance at a service provider providing the services attained by the method and system according to the invention or alternatively at the user himself (for instance if the user is a larger company, organisation, etc.). It is, however, understood that various parts of the system may also be provided at different physical localities if this is regarded as advantageous.
  • An important consequence of using the method and system according to the invention is that when the user becomes aware of the reception of SPAM mails or other un-solicitated mail pieces or messages received at his e-mail address or other access address to his electronic communication system, it becomes possible for the user to determine exactly who originally was given the user's e- maii or other address and hence to detect at least a member through which the un-solicitated mail piece/message has passed,
  • Figure 1 shows a "Create new user" picture presented on the display screen of a new user of the method and system according to an embodiment of the invention during a "subscription session” carried out when a new user desires to subscribe to the services provided by the method and system according to the invention;
  • Figure 2 shows a Set-Up page comprising fields for user definition of questions and corresponding answers used in a challenge/response procedure according to the invention presented on the display screen of a new user of the method and system according to an embodiment of the invention during the "subscription session";
  • Figure 3 shows the Set-Up page of figure 2 further describing the challenge/response procedure according to the invention;
  • Figure 4 shows the Set-Up page of figure 2 further describing details of the challenge/response procedure according to the invention
  • Figure 5 shows the Set-Up page of figure 2 further describing details of the challenge/response procedure according to the invention
  • Figure 6 shows the Set-Up page of figure 2 further describing details of the challenge/response procedure according to the invention
  • Figure 7 shows review information provided to the user during the "subscription session" of the method and system according to the invention comprising the new e- mail address given to the user;
  • Figure 8 shows further review information provided to the user during the "subscription session"
  • Figure 9 shows the first page received by a new potential member (sender) the first time he sends an e-mail to a user of the method and system according to the invention including a direction to a web site upon which the challenge/response procedure of the invention is accessed;
  • Figure 10 shows the question presented to the potential new member during the challenge/response procedure according to the invention
  • Figure 1 1 shows the effect of providing a correct answer in the challenge/response procedure of figure 10, i.e. the clearing of the e-mail for delivery to the user of the method and system of the invention and the provision of a member-channel to the new member;
  • Figure 12 shows an opening page according to an alternative embodiment of the invention which will be provided to a member and comprising an alternative challenge/response procedure according to the invention
  • Figure 13 shows a schematic representation of the effect of the method and system according to the invention as experienced by a user with an e-mail address: you@mrspamstopper.com.
  • each member seeking access to the user via e-mail is assigned a unique mail-address (member-channel) to the user, rather than the user having one common mail-address that all senders are writing to ⁇ [user name]@[dornain]).
  • the unique mail-address according to the invention could thus for instance be of the form (notation): ([member- channel] ⁇ [user name]. [domain]) or [member-channe!].[user name]@[domain].
  • the specific form of the mail address is not in itself important, but rather that each member according to the invention is assigned a unique member channel to the user and that this member channel is specified in the e-mail address itself.
  • the following detailed description comprises a subscription session, where a new user wants to subscribe to/become a user of the services offered by the method and system according to the present invention, with the prime objective to prevent the reception of unwanted e-mails at the user.
  • the various steps performed by a potential new user during the subscription session are described with reference to figures 1 through 11.
  • the function of the method and system according to the invention as experienced by somebody (a potential new member) trying to communicate with a user subscribing to the method and system according to the invention for the first time will be described with reference to figures 12 through 15..
  • the experiences of a user subscribing to the method and system according to the invention will be described in detail with reference to figure 16.
  • Subscription session fa user wants to subscribe to the services provided by the method/system according to the invention, in summary termed "Mr.Spamstopper"
  • Access to Mr.Spamstopper can be attained for instance via an appropriate home page on the Internet (in this example on http://flue4.com) or via a corresponding e- mail connection.
  • the potential user of the service is on his display screen presented with the picture "Create new user" generally referred to by reference numeral 10 in figure 1 comprising three fields for required information: the user name, field 3, which is the e-mail address of the new user on which address Mr.Spamstopper can contact the user, and two fields 4, 5 containing a user-defined password.
  • the user may also indicate his full name in field 6 and a backup e-mail address, field 7. The contents of the above fields may be deleted with the clear icon 8. Subsequently pressing the continue icon 9, the user is presented with the Mr.Spamstopper set-up picture shown in figure 2.
  • a key feature is the provision by the user of a question (a question which is used in a so-called challenge/response procedure) which Mr Spamstopper will ask anybody, probably a person but possibly also another entity, for instance an automatic entity, a PC program or other computer- based device intentionally creating SPAM against the user, the first time this person or entity writes to the user via e-mail (cf.
  • the user in the present step of the subscription session has to provide Mr.Spamstopper with this question, which said person or other entity will later on have to answer the first time he addresses the user on the address defined in field 3 above.
  • the user himself can choose the wanted level of SPAM-protection as described further in figures 6, 7 and 8.
  • the user may thus choose different levels of spam-protection as required, by choosing between different types of questions and correct answers in the challenge/response procedure. Typical examples of such questions can be obtained by clicking on the field "see examples of questions", field 11.
  • a user may even maintain a completely open e-mail address and have other addresses protected by the method and system according to the invention.
  • a company may choose to keep its main e-mail address as shown on the company's home page open for free reception of e-mails, whereas the e-mail addresses of individual persons in the company could be protected against reception of unwanted e-mails by means of the method and system according to the invention, e.g. by becoming individual subscribers to "MrSpamstopper".
  • a sender of an e-mail to one of these individual users may after sending the e-mail receive an e-mail comprising the company's logo followed by the text: "Thank you for your e-mail to XXX/Company. For security reasons wee ask you to please fili out the empty field indicated below, before we can receive your e-mail:"
  • the protection level offered by the method and system according to the invention can be defined by the user. This is exemplified with reference to figures 3, 4, 5 and 6.
  • the display picture generally referred to by 19 contains review information comprising the user's new e-mail address (the address that will be protected against reception of unwanted e-mails by the method and system according to the invention). This address is indicated in field 20. Clicking on the Create icon 21 will thereafter effect the creation of the desired subscription to the services provided by the method and system according to the invention..
  • FIG 9 there is shown a response from the Mr. Spamstopper to somebody (a new e-maii sender) who for the first time attempts to send an e-mail to the user: MrX@flue4.com (the recipient).
  • the new e-mail sender sends an e-mail on the subject: "Re Test (flue4)" to the user (recipient): MrX@flue4.com.
  • the new e-mail sender receives the message shown in figure 9: "We have received a mail from you for MrX@flue4.com which must be verified before it can be delivered to the recipient".
  • the question (as originally defined by the user as described above): "What colour is the sky?" is presented in field 26 and the sender indicated an answer he believes to be the correct one in field 27: "Blue”, He then clicks on the icon 28 ("send the answer"). Provided the answer were correct, the screen picture 26 shown in figure 11 will then be received by the sender, in this case indicating that "the mail has been cleared", 69,
  • the method/system i.e.
  • McSpamstopper chooses the particular member-channel to be applied by the sender for subsequent correspondence with the user, Le.. "qopa.mrx@flue4.com”, as indicated by 70 in figure 11. At this stage of the procedure, the present e-mail is furthermore delivered by "MrSpamstopper" to the user (recipient).
  • the sender may, however, himself define the name of his member channel, which may be advantageous in order for the sender to be able to remember the name of his member channel.
  • the opening page As an alternative to the screen pictures shown in figures 9 to 11 , the opening page
  • the question in the challenge/response procedure relates to a picture 34 presented to the sender on the opening page, 71 , shown in figure 12, in this case depicting a brown horse.
  • the response of the sender is in the shown embodiment aided by the provision of a list 35 of alternatives accessible on the opening page, for instance "A brown horse, a black cow, a white dog, etc.”..
  • the button 36 is pressed and the procedure proceeds in principle as outlined under the description of the invention in figures 9 to 11 above.
  • the challenge/response procedure could furthermore alternatively rely on non- pictorial access information.
  • the display of a picture of a brown horse in figure 12 could be replaced by the emission of a chosen sound signal, which would be well known to an average human being, for instance a female singing a song, the corresponding question being what is this sound and the (possibly assisted) answer: "this is a female singing a song",.
  • Attach File field with browser 31 This provides an opportunity for the sender of the initial mail to attach a file or files to the posting in the user's forum.
  • Send a copy of the mail above to mv own mail- address Sends a copy of the mail to the mail address provided by the contacting part.
  • mr testerson@frits.flue4.com is created on the mail server as a new mail address.
  • Frits The mail address that you can use to write to Frits in the future is this: mr testerson(3?frits,flue4.com. This is your personal and confidential mail-address to write to Frits. Anybody else who wishes to contact Frits can do this through frits@frits.flue4.com. Thank you. End of Automatically generated by fiue4.com Spam Free Robot
  • Mr_Testerson is created as a new member of the forum that Frits logs on to, in order to read and write mail
  • FIG 13 there is shown a schematic representation of the effect of the method and system according to the invention as experienced by a user with an e- mail address: you@mrspamstopper.com.
  • the central region 59 schematically indicates a user
  • the circular region 58 surrounding 1 indicates the functions of the method and system according to the invention ("MrSpamstopper"), i.e. the "circle” as initially defined, this region comprising the necessary hardware and software for implementing the various functions of the method and system of the invention, symbolically represented by the box 38 in figure 13,
  • the external region 57 indicates "the rest of the world" comprising any sender wanting to communicate by e-mail with the user.
  • a sender sends an e-mail to the user you@mrspamstopper.com, whereupon he is presented with a challenge response 39 as described above. Provided the sender gives a correct answer, an individual mail channel is created at 41, thus effectively preventing the reception of unwanted mails from the sender.
  • To provide the user's address for instance to a newsletter, subscribing to some services, etc. or creating a profile on the Internet can be effected using a browser plug-in to insert the address (channel) on the page as indicated by reference numeral 43 upon which a channel is created at 44 after which a database on the Internet will have a channel through which they can write to the user, as long as the user accepts this.
  • the user may send an e-mail in the usual manner to an external receiver through the method and system of the invention. If the receiver already has a channel, 49, the receiver receives ordinary e-mai) from the user to receiver's address, with channel-address as sender of mail, 51. If the receiver does not already have a channel, a channel is created 50.
  • the receiver may forward your mail, 52 to someone else to respond (auto reply), after which someone else replies to your e-mail, 53.
  • auto reply On entering the service provided by the method and system of the invention, the channel is recognized, 54 and the mail is let through, 55 and the resulting incoming answer on mail from others 56 is experienced by the user just as always.
  • a receiver may however also give the channel away to spammers (the channel that the receiver knows being the only information the receiver can give away) or alternatively the receiver starts sending you mails that you do not want.
  • the channel is recognized, 61 by the method and system of the invention, but in this case you can actually see, 63, 64 who gave your address (the channel) to spammers, whereupon you can click on the Mr.Spamstopper icon for instance indicated by ref. no. 72 in figure 2 (ret no. 65 in fig., 13) with the effect that the channel and mail are deleted, 66.
  • the user of the MrSpamstopper service largely has the same experience of e-mail communication with the surrounding world as always but with the additional possibility to stop spam and other unwanted mail items and the possibility to detect from where such mail items came.
  • the "universal access” could also have the form of a code written for instance in the auxiliary data coming with a mail, which data are not seen by the user. This would mean that if the mail contained this coded information (for instance only 6 characters in the header of the e-mail), the mail would pass directly through without challenge response. This code could furthermore be changed centrally or according to set-ups chosen by the user. Thus for instance a postal authority of a country could offer spamfree e-mail, where only those having accounts could distribute commercials, by for instance selling such "universal keys” to providers of commercials. Furthermore the "universal keys" could be re-set after use..
  • a user could have more questions or more answers, for instance "what does your enquiry concern?" and the mail would not only receive a challenge response but would also be routed to the appropriate place in the company
  • a challenge/response means such as a database or other electronic processing/storage means for sending a challenge such as a question to said external entity
  • an electronic communication item such as an e-mail
  • an electronic communication item will be passed on the user's inbox upon acceptance of the response from the external entity, for instance a person sending an e-mail to the user, by said determining means,
  • inbox should be interpreted in a broad sense, other appropriate reception/display means may of course be present at the user.
  • Sending an e-mail to the blind-sender address ([user name]@[user name].[domain]) does not create notification to the user, but generates an automated response e- mail by the system to the contacting part.
  • the automated response e-mail received when writing to a blind-sender address holds information on how to get to the user's contact-page (http://[user name].[domain])
  • the automated response-e-mail itself is in HTML-format and contains the functionality of the user's contact-page (http://[user name]. [domain]), and thus minimising the hassle for the contacting part. Entering the user's contact-page (http://[user name], [domain]) leads to activation of the functionality of that page.
  • Example 2 Someone writes to a mail-address that is terminated / cut by the user
  • this e-mail address has functionality like the blind sender mail-address ⁇ [user name]@juser name].[domain] ⁇
  • Example 3
  • the user wants to expose or link to contact-information on web pages / business cards (how to contact me), etc.
  • the user can choose to expose or link to the "blind-sender address" [user name]@[user name].[domain]
  • the user wants to write a new mail to someone who is already a member / has a channel into the user's circle
  • the user logs on to the bulletin board.
  • the user creates a new topic in the bulletin board in the desired part of the forum (where the thread should start and continue)
  • the user chooses which member(s) of the forum is receiver(s) of the message.
  • the system sends an e-mail to the member's e-mail-address, with the post in the forum as e-mail content.
  • the user wants to write a mail to someone who is not a member / does not have a channel in the user's circle
  • the user logs on to the bulletin board.
  • the user creates a new topic in the bulletin board in the desired part of the forum (where the thread should start and continue).
  • the user enters e-mail address(es) of the receiver(s), and optionally provides further information for the channel / member that is to be created..
  • the system automatically creates a new member of the forum based on the user's input.
  • the user wants to give out a mail-address to a mechanical part such as a newsletter, or for membership purpose, etc.
  • the user logs on to the bulletin board, or uses other restricted ways to gain access to the functionality of the system..
  • the user enters at least a name for the channel, e.g. "newsletter”.
  • the user can add wore information to the channel, describing its purpose, notes, images, etc.
  • the system generates a new member in the bulletin board.
  • the name of the member is the name provided by the user.
  • the system creates a new mail address [entered name]@[user name].[domain].
  • the system provides the user with the mail-address to be given to the mechanical part.
  • Example 7 User and member write multiple mails with the same subject / in the same thread.
  • the system When the system receives a new e-mail, the subject-line is automatically analysed before the e-mail is automatically posted in the forum. The system looks at the last part of the subject-line and matches this to existing forum topics. In effect this means that if a post exists in the forum with the title "Our holyday.", and a new mail is received with the subject fine being "Re: Our holyday..”, the non-matching part is stripped and the mail entered as a new post in the topic "Our holyday.,”
  • a member (or a new generated mail-channel) that writes a new topic can be assigned by default to enter a category in the forum - Like "Private”, “Work”, “Family”, etc..
  • Example 8 The user receives unwanted e-mail / spam.
  • each post in the forum is next to member-information of the posting part, in addition to this, the system has an extra button to delete unwanted e-mail, and delete the channel..
  • the result is that next to every received mail is the possibility of terminating the channel.
  • the user can no longer be contacted through this e-maii address, thus effectively ending the spammer's activity towards this user.
  • the user can see who originally created the troubled e-mail address, or to whom it was originally given, as this is incorporated in the channel.

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Abstract

L'invention concerne un procédé et un système permettant d'empêcher la réception de messages électroniques non souhaités, tels des courriels envoyés à partir d'une entité externe, par exemple, d'une personne à un utilisateur. Selon ce procédé, chacune desdites entités se voit initialement attribuer une adresse unique ou un canal de membre menant à l'utilisateur en vue de communiquer avec celui-ci. Cette adresse unique n'est attribuée qu'à l'entité externe, après une réponse réussie donnée par l'entité externe, pendant une procédure de réponse/défi initiale. L'adresse unique constitue une partie de l'adresse électronique même, ce qui permet d'éviter d'avoir recours à un mot de passe spécifique attribué à chaque fois que l'entité externe souhaite communiquer avec l'utilisateur. Ce dernier expérimentera le procédé et le système de ladite invention, comme étant extrêmement transparents, ce qui fait connaître à l'utilisateur une expérience normale en matière de réception de courrier et, donc, un niveau très élevé de protection face à la réception de messages électroniques non souhaités.
PCT/IB2005/053376 2004-11-15 2005-10-14 Procede et systeme de prevention de la reception de messages electroniques non souhaites, tels que des pourriels WO2006051434A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2007540754A JP2008520022A (ja) 2004-11-15 2005-10-14 スパムメールのような不要な電子メッセージの受信を防止するための方法およびシステム
NO20072706A NO20072706L (no) 2004-11-15 2007-05-24 Fremgangsmate og system for a forhindre mottagelse av uonskede elektroniske meldinger sa som soppel-epost

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US62795604P 2004-11-15 2004-11-15
US60/627,956 2004-11-15

Publications (1)

Publication Number Publication Date
WO2006051434A1 true WO2006051434A1 (fr) 2006-05-18

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Application Number Title Priority Date Filing Date
PCT/IB2005/053376 WO2006051434A1 (fr) 2004-11-15 2005-10-14 Procede et systeme de prevention de la reception de messages electroniques non souhaites, tels que des pourriels

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Country Link
JP (1) JP2008520022A (fr)
CN (1) CN101095154A (fr)
NO (1) NO20072706L (fr)
WO (1) WO2006051434A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2463532A (en) * 2008-09-23 2010-03-24 Euros Evans Email filtering based upon security information embedded in mail or provided through web based challenge response system
JP2010529563A (ja) * 2007-06-08 2010-08-26 マイクロソフト コーポレーション 通信スレッド追跡による未請求インスタント・メッセージの低減
CN103686640A (zh) * 2013-12-23 2014-03-26 中国移动通信集团宁夏有限公司 一种支持验证后下发的短信中心系统和操作方法
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JP2010529563A (ja) * 2007-06-08 2010-08-26 マイクロソフト コーポレーション 通信スレッド追跡による未請求インスタント・メッセージの低減
JP4768081B2 (ja) * 2007-06-08 2011-09-07 マイクロソフト コーポレーション 通信スレッド追跡による未請求インスタント・メッセージの低減
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US9497149B2 (en) 2012-02-03 2016-11-15 Richard Kramer System and method for reducing unsolicited E-mails
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WO2015025325A1 (fr) * 2013-08-20 2015-02-26 Longsand Limited Jetons privés dans des messages électroniques
US10243900B2 (en) 2013-08-20 2019-03-26 Longsand Limited Using private tokens in electronic messages associated with a subscription-based messaging service
CN103686640A (zh) * 2013-12-23 2014-03-26 中国移动通信集团宁夏有限公司 一种支持验证后下发的短信中心系统和操作方法

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