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| Subject: | Re: Determining that someone is not the author of an offensive email |
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| Date: | Fri, 1 Jun 2007 20:11:10 -0500 |
Hi Alan! Thank you for your message.
Hey Flavio, I don't have a great deal of advise to give, but I am curious about a few things:
I know literally nothing about Brazilian law, but how is it against the law to send an offensive email?
Yes, I understand what you mean. The prosecution was started basing in a defaming accusation.
And even if it is, how in the world do you get a search warrant for 12 people with no evidence directly linking any of them?
It is some kind of regulation of our justice. The ISP gave the information that the IP number sending the message was attending the building and the judge signed the order to search all the apartments using the common ADSL.
> There were 12 apartments connected to that ADSL line. All them had > false IP numbers (198.162.???.???).
This was pointed out once before, but 192.162.x.x is very real (public) ip-space. 192.168.x.x is private (fake, if you will), I assume this is what you meant?
Yes.
Do you know if the NAT router has wireless capabilities, or if ANY of the 12 people had a wireless access point? If so ANYONE could have attached to it and sent the message. There is also the possibility of one of their computers being compromised, in which case a remote attacker could have sent it through them.
I'm trying to verify this possibility.
> The message was forwarded by four mail servers: > - Hotmail, timestamp 22:20 -0000 > - MSN. timestamp 22:20 -0000 > - a brazilian provider (BP), timestamp (16:20 -0300) > - a brazilian company (BC), timestamp (16:20 -0300)
These times don't add up if -0300 is correct, just convert them to all to UTC:
Hotmail, timestamp 22:20 -0000 MSN. timestamp 22:20 -0000 brazilian provider (BP), timestamp (19:20 -0000) brazilian company (BC), timestamp (19:20 -0000)
For this to be true MSN must have sent the message back in time 3 hours. It is more likely that 19:20 -0300 is correct, then the times match perfectly.
I don't understand what you say here. Hotmail was the 1st. email server to manipulate the email. BC was the last one. BP and BC can not append lines to the header 3 hours "before" Hotmail and MSN. Both must have expected times 22:20 plus something.
This is one reason I think the email is fake in some way. If it is true, then it is possible that the origin IP is also fake.
Thank you for your thoughts.
Regards
Flavio
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