Don’t call me DOM

24 September 2004

Annospam

I have been busy lately deploying a tool that I (and others) had started to develop one year ago, and had been stalled since then, informally called Annospam; the tool allows to cleanse W3C Mailing List Archives from its huge number of spams they host and are likely to continue to receive, however clever our anti-spams systems are getting.

The idea is to use the Annotea protocol as a way to store and retrieve spam marks on archived messages, and to regenerate the relevant archives based on these marks; it uses lots of W3C Technologies (XSLT as a way to build a user interface, RDF/XML as a data format, HTTP as a query/update protocol), which makes it really interesting, if sometimes somewhat challenging.

13 September 2004

Give Spammers a rest!

Filed under:

Spammers, like many people down here, needs to rest after all their efforts; spammers needs to take a week-end break, too, as shows the repartion of the number of messages per weekday:

Statistics of received message per weekday (1 is Monday, 7 Sunday) These plots are based on the spam I received in the past 2 months.

Note that in fact, this interpretation is probably buggy; for instance, it’s likely that a fair number of Zombies computers used to send spams are shut down during the week-end.

29 July 2004

Fake SpamAssassin headers

Filed under:

Although my anti-spam set up works fairly well, I had been surprised in the past months (apparently starting end of May) to get some obvious spams (involving e.g. ‘Valium’ in the subject) going through it without problems. Only today have I realized that this was because the mails were not checked by my SpamAssassin, but (supposingly) by a SpamAssassin on popular free Web-based email services (e.g. yahoo or hotmail); that is, they included the following headers:

X-Spam-Checker-Version: SpamAssassin 2.60-spambr_20030926a on popular_mail_service.com
X-Spam-Level:
X-Spam-Status: No, hits=-5.9 required=5.0 tests=AWL,NO_REAL_NAME autolearn=no
        version=2.60-spambr_20030926a

Due to the way my SpamAssassin set up works, they were not re-checked when entering my spam filters!

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Picture of Dominique Hazael-MassieuxDominique Hazaël-Massieux (dom@w3.org) is part of the World Wide Web Consortium (W3C) Staff; his interests cover a number of Web technologies, as well as the usage of open source software in a distributed work environment.