North American Network Operators Group

Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical

Re: ISP phishing

  • From: Gadi Evron
  • Date: Thu Jun 23 10:42:34 2005

Robert Boyle wrote:
> At 05:37 AM 6/23/2005, you wrote:
>> Hi guys. I notice a large increase in recent weeks of ISP directed
>> phishing - largely because of worms moving backward to using the user's
>> own domain for the spam, but not just in the from: address.
>> I believe this started out as a "let's feel this out" or "wow, that
>> worked, let's phish ISP's directly too". I now have several reports
>> that point to this becoming a serious problem.
>> Old with a spark of new, but definitely a problem.
>> Anyone else dealing with this?
> Due to the huge number of variants in the wild, our AV software can't
> keep up (probably nobody's can). Instead, we enabled a global rule which
> blocks any email from accounts such as billing, root, postmaster,
> antivirus, abuse, security, etc. which don't originate from our
> management IP space where our people work. As a result, we have stopped
> these phishing scams for our users dead in their tracks.
> -Robert

We did as well, but we did not yet find a solution for legit bounces..
it naturally breaks that.

It's a temporary solution to what I see that is going to become very big.