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 :: Mailing Lists

[ILUG] how should I handle a flood of fscking backscatter?

[ILUG] how should I handle a flood of fscking backscatter?

Brian Foster blf at utvinternet.ie
Mon Sep 10 12:07:25 IST 2007


  | Date: Mon, 10 Sep 2007 11:24:07 +0100
  | From: Nick Murtagh <nickm at go2.ie>
  | 
  | Brian Foster wrote:
  |  >[ ... ]  I believe this is known as “backscatter”.
  | 
  | It's called a Joe Job, and there's not much you can do about it, short
  | of disabled the email account or waiting till it stops.

 disabling the mail account is NOT an option
 (it's my _main_ account!).  waiting until it
 stops is what I've done in the past (more on
 this below).

 I've heard it refered to as a “joe job”, but
 have always understood that term to mean a
 _deliberate_ attempt to damage the services
 or reputation of the victim.  “backscatter”
 is simply e-mail bounces sent to an innocent
 (e.g., faked) e-address, which is what is
 happening here.  Wikipedia agrees with me:

    “ Online, a joe job (or Joe job) is a spam attack
     using spoofed sender data and aimed at tarnishing
     the reputation of the apparent sender and/or induce
     the recipients to take action against him (see also
     e-mail spoofing).  For a related phenomenon that is
     not targeted directly at a particular victim, see
     backscatter of email spam.”
        — http://en.wikipedia.org/wiki/Joe_job

    “Backscatter of email spam
      The term "backscatter" is also used to describe a
     side-effect of email spam [ ... ].  Since [ 2002 ],
     a large proportion of malignant email is sent with
     a forged sender address, but some mail servers do
     not take this into account.  They generate bounce
     messages for spam or viruses - which of course go
     to an innocent party.”
        — http://en.wikipedia.org/wiki/Backscatter#Backscatter_of_email_spam

 be that as it may, just waiting until the
 storm passes is what I've always done in
 the past.  what makes the current flood
 different is the sheer volume.  I don't have
 any numbers available ATM, but my recollection
 is past incidences have been on the order of a
 few hundred bounces over the course of a week;
 this one is at most 12 hours old, has caused
 perhaps an order of magnitude more bounces(!),
 and appears to still be ongoing.  ;-\ 

 ( I _suppose_ the magnitude hints it could be
  a joe job in the Wikipedia sense — a malicious
  attack me _me_ — but I haven't the faintest
  idea why anyone would be doing that!? )

cheers!
	-blf-
-- 
▶ ▶  I AM CURRENTLY LOOKING FOR A JOB!  ◀ ◀ | Brian Foster
Experienced (>25 yrs) software engineer:    |        Montpellier, FRANCE
 • Unix, Linux, embedded, design-for-test;  | Stop E$$o (ExxonMobile)!
 • Software/hardware co-design, debugging;  |     http:/www.stopesso.com
 • Kernels, drivers, filesystems, &tc;    Résumé (CV) & contact details:
 • IDL, automated testing, process, &tc.   http://www.blf.utvinternet.ie



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