Re: Interesting Spam Trap Idea - Fake Authentication

2013-06-11 Thread Neil Schwartzman
On Jun 10, 2013, at 9:30 PM, Dave Warren da...@hireahit.com wrote: I doubt it's a guy, but it wouldn't surprise me if the botnet that performs the dictionary attack forwards the results off to a guy to confirm that the account works. no, really, it's a bot. They have tens of millions of

Re: Interesting Spam Trap Idea - Fake Authentication

2013-06-11 Thread David F. Skoll
On Mon, 10 Jun 2013 20:27:05 -0700 Marc Perkel supp...@junkemailfilter.com wrote: I'm not sure. I'm wondering if they use automation and maybe it's not so smart. I don't think there is a guy typing passwords. Certainly not, but it's easy enough to program a password-cracker to try to detect

Re: Interesting Spam Trap Idea - Fake Authentication

2013-06-11 Thread David F. Skoll
On Mon, 10 Jun 2013 20:33:29 -0700 Marc Perkel supp...@junkemailfilter.com wrote: We'll - it does waste their time and resources. Not so they'd notice. The basic rule is: No matter how much computing power and bandwidth you have, the spammers have a lot more. Trying to tie up their resources

Re: Interesting Spam Trap Idea - Fake Authentication

2013-06-11 Thread Dave Warren
On 2013-06-11 00:48, Neil Schwartzman wrote: On Jun 10, 2013, at 9:30 PM, Dave Warren da...@hireahit.com mailto:da...@hireahit.com wrote: I doubt it's a guy, but it wouldn't surprise me if the botnet that performs the dictionary attack forwards the results off to a guy to confirm that the

Interesting Spam Trap Idea - Fake Authentication

2013-06-10 Thread Marc Perkel
I'm experimenting with an interesting spam trap idea. Normally I run many inbound servers as spam filters (Using Exim) with no SMTP authentication. But then I got this idea I decided to implement and advertise that the server had SMTP athentication even though there was nothing to

Re: Interesting Spam Trap Idea - Fake Authentication

2013-06-10 Thread David F. Skoll
On Mon, 10 Jun 2013 08:32:35 -0700 Marc Perkel supp...@junkemailfilter.com wrote: I decided to implement and advertise that the server had SMTP athentication even though there was nothing to authenticate. I created an authenticator that would accept any username and password. But it's

Re: Interesting Spam Trap Idea - Fake Authentication

2013-06-10 Thread John Hardin
On Mon, 10 Jun 2013, Marc Perkel wrote: I'm experimenting with an interesting spam trap idea. Normally I run many inbound servers as spam filters (Using Exim) with no SMTP authentication. But then I got this idea I decided to implement and advertise that the server had SMTP

Re: Interesting Spam Trap Idea - Fake Authentication

2013-06-10 Thread John Wilcock
Le 10/06/2013 17:38, David F. Skoll a écrit : That's an interesting honeypot. I've seen spammers crack SMTP AUTH passwords, but in most cases the first thing they do is send an email to a freemail account with a subject like: 192.168.33.55,user,passwd and if they don't get the

Re: Interesting Spam Trap Idea - Fake Authentication

2013-06-10 Thread David F. Skoll
On Mon, 10 Jun 2013 17:49:11 +0200 John Wilcock j...@tradoc.fr wrote: Theoretically you could detect such confirmation messages (logically the first message from a given user,password pair) and actually deliver them, then harvest the rest! But you'd have to be really careful not to become a

Re: Interesting Spam Trap Idea - Fake Authentication

2013-06-10 Thread Benny Pedersen
Marc Perkel skrev den 2013-06-10 17:32: Thoughts? postfix recently got smtpd_relay_restrictions, wonder if it comes from that idear, its not need auth if spam is just delivered localy not needing relaying, but it will still be possible to make alias forwarding so its not relaying, just

Re: Interesting Spam Trap Idea - Fake Authentication

2013-06-10 Thread Benny Pedersen
John Wilcock skrev den 2013-06-10 17:49: Theoretically you could detect such confirmation messages (logically the first message from a given user,password pair) and actually deliver them, then harvest the rest! But you'd have to be really careful not to become a spam relay in the process!

Re: Interesting Spam Trap Idea - Fake Authentication

2013-06-10 Thread Benny Pedersen
David F. Skoll skrev den 2013-06-10 17:53: Also, putting on a spammer hat (NOT that I actually own one!) if the credentials user/password worked for me via SMTP AUTH, I would then try user/anotherpassword and if those *also* worked, I'd assume it was a honeypot and avoid it. i would

Re: Interesting Spam Trap Idea - Fake Authentication

2013-06-10 Thread Marc Perkel
On 6/10/2013 8:53 AM, David F. Skoll wrote: On Mon, 10 Jun 2013 17:49:11 +0200 John Wilcock j...@tradoc.fr wrote: Theoretically you could detect such confirmation messages (logically the first message from a given user,password pair) and actually deliver them, then harvest the rest! But you'd

Re: Interesting Spam Trap Idea - Fake Authentication

2013-06-10 Thread Marc Perkel
On 6/10/2013 8:38 AM, David F. Skoll wrote: On Mon, 10 Jun 2013 08:32:35 -0700 Marc Perkel supp...@junkemailfilter.com wrote: I decided to implement and advertise that the server had SMTP athentication even though there was nothing to authenticate. I created an authenticator that would accept

Re: Interesting Spam Trap Idea - Fake Authentication

2013-06-10 Thread Benny Pedersen
Marc Perkel skrev den 2013-06-11 05:33: We'll - it does waste their time and resources. Maybe it would be better if it failed every time just to keep them working at it. Maybe I should open pop and imap ports just to make it more inviting looking. +1 ;) as is spammers knowing using pop3 to

Re: Interesting Spam Trap Idea - Fake Authentication

2013-06-10 Thread John Levine
One of the things I like about it is that if hackers are sending spam into my fake server then it takes away from their efforts on real accounts that they could hack. I'm wondering if enough of us put up fake authentication not only can we detect spam that way but we could waste a lot of

Re: Interesting Spam Trap Idea - Fake Authentication

2013-06-10 Thread Dave Warren
On 2013-06-10 20:27, Marc Perkel wrote: I'm not sure. I'm wondering if they use automation and maybe it's not so smart. I don't think there is a guy typing passwords. Perhaps only accepting the first password for any particular account from a single IP, and rejecting different password

Ang.: Interesting Spam Trap Idea - Fake Authentication

2013-06-10 Thread pe...@irt.kth.se
: Interesting Spam Trap Idea - Fake Authentication Datum: tis, jun 11, 2013 06:30 On 2013-06-10 20:27, Marc Perkel wrote: I'm not sure. I'm wondering if they use automation and maybe it's not so smart. I don't think there is a guy typing passwords. Perhaps only accepting the first password