Overview of spam from Dejanews.com

26 Jun 2000

Note: Automated spam monitoring stopped several years ago. These web pages are maintained for historical reasons. Some may be updated from time to time as news about the individual sites becomes available.

No spam today

Overview of last 6 reports

date	posts	total	BI
11 Sep 2000	437	981	620.57	full headers
23 Jul 2000	389	1202	660.59	full headers
07 Jul 2000	422	1171	673.11	full headers
23 Jun 2000	417	1159	663.73	full headers
09 Jun 2000	581	1881	1014.95
19 May 2000	218	692	376.15

Overview of history

	posts	total	BI
Total spam since 19 May 2000	2464	7086	4009.10
Peak spam on 9 Jun 2000	581	1881	1014.95
Peak daily spam on 9 Jun 2000	27	89	48.33	(21-day average)
Average daily spam	19.5	55.6	31.59

full history also available

General information about Dejanews.com

Added 11 Nov 1997. Deja News is a news archival service which also allows users to post articles. Spam from Deja News was once relatively low-level, due to the fact that posters needed to use a verifiable email address. The actual source of the spam may be found in the 'X-Originating-IP-Addr:'.

June 2000: Deja.com seems to no longer generate the X-Originating-IP-Addr header and spam levels have risen to the point where Deja.com is now the #1 source of spam in my filters.

Site history

12 Nov 1997: Added to tracking list.
20 June 1997: Deja.com now #1 spam source.

To report spam, contact abuse@dejanews.com

A complete history may also be available.

General notes:

Only a small subset of usenet (261 groups) was sampled. Only articles that hadn't been cancelled yet were counted. Actual spam may have been much greater.
Heuristics that detect single-posted articles are, by their very nature, somewhat shaky. Innocent articles may be tagged as spam because they share certain characteristics or keywords with actual spam. In particular, a posted spam complaint that includes the spam in its entirety will very often be identified as spam.
Some posts may be forgeries intended to look like they came from Dejanews.com.
The first entry in the history file is not used to compute peak or average spam counts, as this entry covers an unknown number of days. This may cause an apparent disreprency between spam totals and spam averages.

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The opinions expressed on this page are solely those of Ed Falk and do not necessarily represent those of any other organization, (although I hope they do). I wish to thank Rahul.net for hosting this web page.