---
_id: '6287'
abstract:
- lang: eng
text: Spamming remains a form of Internet abuse, which burdens the Internet infrastructure,
is generally regarded as an annoyance, and is said to cause a huge economic harm.
Many technological, organizational, and legislative anti-spam measures have already
been proposed and implemented, but have not led to any substantial decrease in
the number of spam e-mails. We propose a scalable and flexible infrastructure
framework that integrates several anti-spam measures and that features both a
technological and an organizational facet. The key element of our infrastructure
is a new organizational unit that reliably and transparently limits the number
of e-mails that can be sent per day and per account. We also analyze the proposed
framework in terms of its theoretical effectiveness, the required resources, and
its limitations.
author:
- first_name: Guido
full_name: Schryen, Guido
id: '72850'
last_name: Schryen
citation:
ama: 'Schryen G. Preventing E-Mail Spam: The Conceptualization and the Analysis
of an Infrastructure Framework.; 2007.'
apa: 'Schryen, G. (2007). Preventing E-mail Spam: The Conceptualization and the
Analysis of an Infrastructure Framework.'
bibtex: '@book{Schryen_2007, title={Preventing E-mail Spam: The Conceptualization
and the Analysis of an Infrastructure Framework}, author={Schryen, Guido}, year={2007}
}'
chicago: 'Schryen, Guido. Preventing E-Mail Spam: The Conceptualization and the
Analysis of an Infrastructure Framework, 2007.'
ieee: 'G. Schryen, Preventing E-mail Spam: The Conceptualization and the Analysis
of an Infrastructure Framework. 2007.'
mla: 'Schryen, Guido. Preventing E-Mail Spam: The Conceptualization and the Analysis
of an Infrastructure Framework. 2007.'
short: 'G. Schryen, Preventing E-Mail Spam: The Conceptualization and the Analysis
of an Infrastructure Framework, 2007.'
date_created: 2018-12-18T12:50:22Z
date_updated: 2022-01-06T07:03:00Z
ddc:
- '000'
department:
- _id: '277'
file:
- access_level: open_access
content_type: application/pdf
creator: hsiemes
date_created: 2018-12-18T13:23:40Z
date_updated: 2018-12-18T13:23:40Z
file_id: '6322'
file_name: anti_spam_framework.pdf
file_size: 456755
relation: main_file
file_date_updated: 2018-12-18T13:23:40Z
has_accepted_license: '1'
keyword:
- Email
- Infrastructure
- Internet
- Spam
language:
- iso: eng
oa: '1'
status: public
title: 'Preventing E-mail Spam: The Conceptualization and the Analysis of an Infrastructure
Framework'
type: report
user_id: '61579'
year: '2007'
...
---
_id: '5655'
abstract:
- lang: eng
text: Spam e-mails have become a serious technological and economic problem. Up
to now, by deploying complementary anti-spam measures, we have been reasonably
able to withstand spam e-mails and use the Internet for regular communication.
However, if we are to avert the danger of losing the Internet e-mail service in
its capacity as a valuable, free and worldwide medium of open communication, anti-spam
activities should be performed more systematically than is currently the case
regarding the mainly heuristic, anti-spam measures in place. A formal framework,
within which the existing delivery routes that a spam e-mail may take, and anti-spam
measures and their effectiveness can be investigated, will perhaps encourage a
shift in methodology and pave the way for new, holistic anti-spam measures. This
paper presents a model of the Internet e-mail infrastructure as a directed graph
and a deterministic finite automaton and draws on automata theory to formally
derive the spam delivery routes. The most important anti-spam measures are then
described. Methods controlling only specific delivery routes are evaluated in
terms of how effectively they cover the modeled e-mail infrastructure; methods
operating independently of any particular routes receive a more general assessment.
author:
- first_name: Guido
full_name: Schryen, Guido
id: '72850'
last_name: Schryen
citation:
ama: Schryen G. Do anti-spam measures effectively cover the e-mail communication
network? A formal approach. The Journal of Information Systems Security (AIS
Special Interest Group in Security). 2007;3(2):66-90.
apa: Schryen, G. (2007). Do anti-spam measures effectively cover the e-mail communication
network? A formal approach. The Journal of Information Systems Security (AIS
Special Interest Group in Security), 3(2), 66–90.
bibtex: '@article{Schryen_2007, title={Do anti-spam measures effectively cover the
e-mail communication network? A formal approach}, volume={3}, number={2}, journal={The
Journal of Information Systems Security (AIS Special Interest Group in Security)},
author={Schryen, Guido}, year={2007}, pages={66–90} }'
chicago: 'Schryen, Guido. “Do Anti-Spam Measures Effectively Cover the e-Mail Communication
Network? A Formal Approach.” The Journal of Information Systems Security (AIS
Special Interest Group in Security) 3, no. 2 (2007): 66–90.'
ieee: G. Schryen, “Do anti-spam measures effectively cover the e-mail communication
network? A formal approach,” The Journal of Information Systems Security (AIS
Special Interest Group in Security), vol. 3, no. 2, pp. 66–90, 2007.
mla: Schryen, Guido. “Do Anti-Spam Measures Effectively Cover the e-Mail Communication
Network? A Formal Approach.” The Journal of Information Systems Security (AIS
Special Interest Group in Security), vol. 3, no. 2, 2007, pp. 66–90.
short: G. Schryen, The Journal of Information Systems Security (AIS Special Interest
Group in Security) 3 (2007) 66–90.
date_created: 2018-11-14T14:51:41Z
date_updated: 2022-01-06T07:02:22Z
ddc:
- '000'
department:
- _id: '277'
extern: '1'
file:
- access_level: open_access
content_type: application/pdf
creator: hsiemes
date_created: 2018-12-18T13:25:12Z
date_updated: 2018-12-18T13:25:12Z
file_id: '6324'
file_name: Do anti-spam measures effectively cover the e-mail communication - Journal
version.pdf
file_size: 100448
relation: main_file
file_date_updated: 2018-12-18T13:25:12Z
has_accepted_license: '1'
intvolume: ' 3'
issue: '2'
keyword:
- e-mail
- spam
- e-mail infrastructure
- anti-spam measures
- spamming options
language:
- iso: eng
oa: '1'
page: 66-90
publication: The Journal of Information Systems Security (AIS Special Interest Group
in Security)
status: public
title: Do anti-spam measures effectively cover the e-mail communication network? A
formal approach
type: journal_article
user_id: '61579'
volume: 3
year: '2007'
...
---
_id: '5658'
abstract:
- lang: eng
text: 'Email communication is encumbered with a mass of email messages which their
recipients have neither requested nor require. Even worse, the impacts of these
messages are far from being simply an annoyance, as they also involve economic
damage. This manuscript examines the resource ?email addresses?, which is vital
for any potential bulk mailer and spammer. Both a methodology and a honeypot conceptualization
for implementing an empirical analysis of the usage of email addresses placed
on the Internet are proposed here. Their objective is to assess, on a quantitative
basis, the extent of the current harassment and its development over time. This
?framework? is intended to be extensible to measuring the effectiveness of address-obscuring
techniques. The implementation of a pilot honeypot is described, which led to
key findings, some of them being: (1) Web placements attract more than two-thirds
(70\%) of all honeypot spam emails, followed by newsgroup placements (28.6\%)
and newsletter subscriptions (1.4\%), (2) the proportions of spam relating to
the email addresses? top-level domain can be statistically assumed to be uniformly
distributed, (3) More than 43\% of addresses on the web have been abused, whereas
about 27\% was the case for addresses on newsgroups and only about 4\% was the
case for addresses used for a newsletter subscription, (4) Regarding the development
of email addresses? attractiveness for spammers over time, the service ?web sites?
features a negative linear relationship, whereas the service ?Usenet? hows a negative
exponential relationship. (5) Only 1.54\% of the spam emails showed an interrelation
between the topic of the spam email and that of the location where the recipient?s
address was placed, so that spammers are assumed to send their emails in a ?context
insensitive? manner. The results of the empirical analysis motivate the need for
the protection of email addresses through obscuration. We analyze this need by
formulating requirements for address obscuring techniques and we reveal to which
extent today?s most relevant approaches fulfill these requirements.'
author:
- first_name: Guido
full_name: Schryen, Guido
id: '72850'
last_name: Schryen
citation:
ama: Schryen G. The Impact that Placing Email Addresses on the Internet has on the
Receipt of Spam ? An Empirical Analysis. Computers & Security. 2007;2(5):361-372.
apa: Schryen, G. (2007). The Impact that Placing Email Addresses on the Internet
has on the Receipt of Spam ? An Empirical Analysis. Computers & Security,
2(5), 361–372.
bibtex: '@article{Schryen_2007, title={The Impact that Placing Email Addresses on
the Internet has on the Receipt of Spam ? An Empirical Analysis}, volume={2},
number={5}, journal={Computers & Security}, publisher={Elsevier}, author={Schryen,
Guido}, year={2007}, pages={361–372} }'
chicago: 'Schryen, Guido. “The Impact That Placing Email Addresses on the Internet
Has on the Receipt of Spam ? An Empirical Analysis.” Computers & Security
2, no. 5 (2007): 361–72.'
ieee: G. Schryen, “The Impact that Placing Email Addresses on the Internet has on
the Receipt of Spam ? An Empirical Analysis,” Computers & Security,
vol. 2, no. 5, pp. 361–372, 2007.
mla: Schryen, Guido. “The Impact That Placing Email Addresses on the Internet Has
on the Receipt of Spam ? An Empirical Analysis.” Computers & Security,
vol. 2, no. 5, Elsevier, 2007, pp. 361–72.
short: G. Schryen, Computers & Security 2 (2007) 361–372.
date_created: 2018-11-14T14:53:12Z
date_updated: 2022-01-06T07:02:22Z
ddc:
- '000'
department:
- _id: '277'
extern: '1'
file:
- access_level: open_access
content_type: application/pdf
creator: hsiemes
date_created: 2018-12-18T13:27:01Z
date_updated: 2018-12-18T13:27:01Z
file_id: '6326'
file_name: The Impact that Placing Email Addresses on the Internet has on the Receipt
of Spam - An Empirical Analysis - Journal version.pdf
file_size: 3026200
relation: main_file
file_date_updated: 2018-12-18T13:27:01Z
has_accepted_license: '1'
intvolume: ' 2'
issue: '5'
keyword:
- Address-obfuscating techniques
- email
- empirical analysis
- honeypot
- security by design
- security by obscurity
- spam
language:
- iso: eng
oa: '1'
page: 361-372
publication: Computers & Security
publisher: Elsevier
status: public
title: The Impact that Placing Email Addresses on the Internet has on the Receipt
of Spam ? An Empirical Analysis
type: journal_article
user_id: '61579'
volume: 2
year: '2007'
...
---
_id: '5661'
abstract:
- lang: eng
text: Spam has become one of the most annoying and costly phenomenon in the Internet.
Valid e-mail addresses belong to the most valuable resources of spammers, but
little is known about spammers? behavior when collecting and harvesting addresses
and spammers? capabilities and interest in carefully directed, consumer-oriented
marketing have not been explored yet. Gaining insight into spammers? ways to obtain
and (mis)use e-mail addresses is useful in many ways, e.g. for the assessment
of the effectiveness of address obscuring techniques and the usability and necessity
of hiding e-mail addresses on the Internet. This paper presents a spam honeypot
project in progress addressing these issues by systematically placing e-mail addresses
in the Internet and analyzing received e-mails. The honeypot?s conceptual framework,
its implementation, and first empirical results are presented. Finally, an outlook
on further work and activities is provided.
author:
- first_name: Guido
full_name: Schryen, Guido
id: '72850'
last_name: Schryen
citation:
ama: 'Schryen G. An e-mail honeypot addressing spammers’ behavior in collecting
and applying addresses. In: Proceedings of the 6th IEEE Information Assurance
Workshop. Westpoint; 2005:37-41.'
apa: Schryen, G. (2005). An e-mail honeypot addressing spammers’ behavior in collecting
and applying addresses. In Proceedings of the 6th IEEE Information Assurance
Workshop (pp. 37–41). Westpoint.
bibtex: '@inproceedings{Schryen_2005, title={An e-mail honeypot addressing spammers’
behavior in collecting and applying addresses}, booktitle={Proceedings of the
6th IEEE Information Assurance Workshop}, publisher={Westpoint}, author={Schryen,
Guido}, year={2005}, pages={37–41} }'
chicago: Schryen, Guido. “An E-Mail Honeypot Addressing Spammers’ Behavior in Collecting
and Applying Addresses.” In Proceedings of the 6th IEEE Information Assurance
Workshop, 37–41. Westpoint, 2005.
ieee: G. Schryen, “An e-mail honeypot addressing spammers’ behavior in collecting
and applying addresses,” in Proceedings of the 6th IEEE Information Assurance
Workshop, 2005, pp. 37–41.
mla: Schryen, Guido. “An E-Mail Honeypot Addressing Spammers’ Behavior in Collecting
and Applying Addresses.” Proceedings of the 6th IEEE Information Assurance
Workshop, Westpoint, 2005, pp. 37–41.
short: 'G. Schryen, in: Proceedings of the 6th IEEE Information Assurance Workshop,
Westpoint, 2005, pp. 37–41.'
date_created: 2018-11-14T14:55:48Z
date_updated: 2022-01-06T07:02:24Z
ddc:
- '000'
department:
- _id: '277'
extern: '1'
file:
- access_level: open_access
content_type: application/pdf
creator: hsiemes
date_created: 2018-12-18T13:31:41Z
date_updated: 2018-12-18T13:31:41Z
file_id: '6331'
file_name: Schryen - An e-mail honeypot addressing spammers' behavior in collecting
and applying addresses.pdf
file_size: 119362
relation: main_file
file_date_updated: 2018-12-18T13:31:41Z
has_accepted_license: '1'
keyword:
- Spam
- ham
- e-mail
- honeypot
- address obscuring technique
- address taxonomy
language:
- iso: eng
oa: '1'
page: 37-41
publication: Proceedings of the 6th IEEE Information Assurance Workshop
publisher: Westpoint
status: public
title: An e-mail honeypot addressing spammers' behavior in collecting and applying
addresses
type: conference
user_id: '61579'
year: '2005'
...
---
_id: '5662'
abstract:
- lang: eng
text: Spam als unerwünschte Massen-E-Mail hat die Grenze von der Belästigung zur
ökonomischen Relevanz längst überschritten. Ihr relativer Anteil am gesamten,
weltweiten E-Mail-Aufkommen stieg in den vergangenen Jahren auf mehr als 50% im
Jahr 2003. Es entstehen jährlich volkswirtschaftliche Schäden in Milliardenhöhe.
Zur Bekämpfung des Spam-Problems werden neben gesetzlichen Regelungen vor allem
technische Lösungen eingesetzt, bei denen das Blockieren und Filtern von E-Mails
in praktisch eingesetzten Anti-Spam-Systemen dominieren. Dieser Artikel führt
in die Spam-Problematik ein und beschreibt, bewertet und klassifiziert die derzeit
bedeutendsten Verfahren zur Bekämpfung von Spam.
author:
- first_name: Guido
full_name: Schryen, Guido
id: '72850'
last_name: Schryen
citation:
ama: Schryen G. Effektivität von Lösungsansätzen zur Bekämpfung von Spam. Wirtschaftsinformatik.
2004;46(4):281-288.
apa: Schryen, G. (2004). Effektivität von Lösungsansätzen zur Bekämpfung von Spam.
Wirtschaftsinformatik, 46(4), 281–288.
bibtex: '@article{Schryen_2004, title={Effektivität von Lösungsansätzen zur Bekämpfung
von Spam}, volume={46}, number={4}, journal={Wirtschaftsinformatik}, publisher={Springer},
author={Schryen, Guido}, year={2004}, pages={281–288} }'
chicago: 'Schryen, Guido. “Effektivität von Lösungsansätzen Zur Bekämpfung von Spam.”
Wirtschaftsinformatik 46, no. 4 (2004): 281–88.'
ieee: G. Schryen, “Effektivität von Lösungsansätzen zur Bekämpfung von Spam,” Wirtschaftsinformatik,
vol. 46, no. 4, pp. 281–288, 2004.
mla: Schryen, Guido. “Effektivität von Lösungsansätzen Zur Bekämpfung von Spam.”
Wirtschaftsinformatik, vol. 46, no. 4, Springer, 2004, pp. 281–88.
short: G. Schryen, Wirtschaftsinformatik 46 (2004) 281–288.
date_created: 2018-11-14T14:56:51Z
date_updated: 2022-01-06T07:02:24Z
ddc:
- '000'
department:
- _id: '277'
extern: '1'
file:
- access_level: open_access
content_type: application/pdf
creator: hsiemes
date_created: 2018-12-18T13:36:34Z
date_updated: 2018-12-18T13:36:34Z
file_id: '6338'
file_name: Verlagsversion Guido_Schryen__281__288.pdf
file_size: 288686
relation: main_file
file_date_updated: 2018-12-18T13:36:34Z
has_accepted_license: '1'
intvolume: ' 46'
issue: '4'
keyword:
- Spam
- E-Mail
- Spoofing
- Blockieren
- Filtern
- Lightweight Mail Transfer Agent Authentication Protocol (LMAP)
language:
- iso: eng
oa: '1'
page: 281-288
publication: Wirtschaftsinformatik
publisher: Springer
status: public
title: Effektivität von Lösungsansätzen zur Bekämpfung von Spam
type: journal_article
user_id: '61579'
volume: 46
year: '2004'
...
---
_id: '5663'
abstract:
- lang: eng
text: Spam as unsolicited e-mail to a large number of recipients is known to ecome
an increasingly disturbing and costly issue of electronic business and internet
traffic. Mainly technical-oriented approaches are applied with a focus on blocking,
filtering, and authentication mechanisms based on the domain name system. They
come along with different drawbacks and have all low effectiveness in common.
The article sketches these approaches, shows its limitations, and proposes an
account-based approach where the number of e-mails per day and account is restricted.
author:
- first_name: Guido
full_name: Schryen, Guido
id: '72850'
last_name: Schryen
citation:
ama: 'Schryen G. Fighting Spam: Motivating an Account-based Approach. In: Isaias
P, ed. Proceedings of the IADIS International Conference WWW/Internet 2004.
Vol. 2. Madrid: IADIS Press; 2004:937-940.'
apa: 'Schryen, G. (2004). Fighting Spam: Motivating an Account-based Approach. In
P. Isaias (Ed.), Proceedings of the IADIS International Conference WWW/Internet
2004. vol. 2 (pp. 937–940). Madrid: IADIS Press.'
bibtex: '@inproceedings{Schryen_2004, place={Madrid}, title={Fighting Spam: Motivating
an Account-based Approach}, booktitle={Proceedings of the IADIS International
Conference WWW/Internet 2004. vol. 2}, publisher={IADIS Press}, author={Schryen,
Guido}, editor={Isaias, PedroEditor}, year={2004}, pages={937–940} }'
chicago: 'Schryen, Guido. “Fighting Spam: Motivating an Account-Based Approach.”
In Proceedings of the IADIS International Conference WWW/Internet 2004. Vol.
2, edited by Pedro Isaias, 937–40. Madrid: IADIS Press, 2004.'
ieee: 'G. Schryen, “Fighting Spam: Motivating an Account-based Approach,” in Proceedings
of the IADIS International Conference WWW/Internet 2004. vol. 2, 2004, pp.
937–940.'
mla: 'Schryen, Guido. “Fighting Spam: Motivating an Account-Based Approach.” Proceedings
of the IADIS International Conference WWW/Internet 2004. Vol. 2, edited by
Pedro Isaias, IADIS Press, 2004, pp. 937–40.'
short: 'G. Schryen, in: P. Isaias (Ed.), Proceedings of the IADIS International
Conference WWW/Internet 2004. Vol. 2, IADIS Press, Madrid, 2004, pp. 937–940.'
date_created: 2018-11-14T14:59:03Z
date_updated: 2022-01-06T07:02:25Z
ddc:
- '000'
department:
- _id: '277'
editor:
- first_name: Pedro
full_name: Isaias, Pedro
last_name: Isaias
extern: '1'
file:
- access_level: open_access
content_type: application/pdf
creator: hsiemes
date_created: 2018-12-18T13:33:30Z
date_updated: 2018-12-18T13:33:30Z
file_id: '6333'
file_name: Fighting Spam_Motivating an account-based approach.pdf
file_size: 46083
relation: main_file
file_date_updated: 2018-12-18T13:33:30Z
has_accepted_license: '1'
keyword:
- e-mail
- spam
- filtering
- blocking
- LMAP
- SMTP account
language:
- iso: eng
oa: '1'
page: 937-940
place: Madrid
publication: Proceedings of the IADIS International Conference WWW/Internet 2004.
vol. 2
publisher: IADIS Press
status: public
title: 'Fighting Spam: Motivating an Account-based Approach'
type: conference
user_id: '61579'
year: '2004'
...