We're still seeing cases where a malicious actor, typically in Eastern Europe, 
will try and sign up a target email address for thousands of lists all at once, 
flooding their mailbox with confirmation traffic , perhaps to hide some other 
nefarious issues.

If we could standardize the confirmation messages, at some point, it might be 
possible to install some sort of circuit-breaker for this kind of abuse, but 
until then ... we're tending to relegate all confirmations to Junk (not Spam) 
status, simply out of preservation of the customer's INBOX usefulness.

Aloha,
Michael.
-- 
Michael J Wise | Microsoft | Spam Analysis | "Your Spam Specimen Has Been 
Processed." | Got the Junk Mail Reporting Tool ?

-----Original Message-----
From: mailop [mailto:mailop-boun...@mailop.org] On Behalf Of Jay Hennigan
Sent: Tuesday, May 24, 2016 12:07 PM
To: mailop@mailop.org
Subject: Re: [mailop] signup form abuse

On 5/24/16 10:17 AM, Vick Khera wrote:
> As an ESP, we host mailing list signup forms for many customers. Of 
> late, it appears they have been getting pounded on with fraudulent 
> signups for real addresses. Sometimes the people confirm by clicking 
> the confirmation link in the message and we are left scratching our 
> heads as to why they would do that. Mostly they get ignored and 
> sometimes they come back as spam complaints.
>
> One opinion I got regarding this was that people were using bots to 
> sign up to newsletter lists other bot-driven email addresses at gmail, 
> yahoo, etc., to make those mailboxes look more real before they became 
> "weaponized" for use in sending junk. That does not seem to be 
> entirely what is happening here...

The appearance of the confirmation email makes a big difference. If it looks 
like an advertisement with lots of graphics, hidden tracking bugs, etc. it's 
likely to be viewed as abuse and used by bad guys to harass innocents.

I'm very pleasantly (and rarely) surprised with list confirmations that look 
like this:

* A single small logo for branding or no graphics at all
* No advertising
* A statement like "On [date] at [time] [timezone] you or someone claiming to 
be you requested to subscribe to [list] from IP address [IP]. To confirm your 
request, click [link]. If you didn't make this request, do nothing and you will 
not hear from us again. To report abuse, [do whatever].

Of course that's assuming that the ESP bothers to confirm subscriptions at all.

One extremely annoying new trend is websites that grey out after a few seconds 
and present a popup demanding an email address. This irritation is likely to 
result in the masses supplying an email address, any email address, just to 
stop the annoyance. I've resisted the temptation to complete them all with 
"abuse@<domain of website>". So far, I'm using "nob...@example.com".

--
Jay Hennigan - CCIE #7880 - Network Engineering - j...@impulse.net Impulse 
Internet Service  -  
https://na01.safelinks.protection.outlook.com/?url=http%3a%2f%2fwww.impulse.net%2f&data=01%7c01%7cmichael.wise%40microsoft.com%7c2c9259b781d94431ff5f08d384077b48%7c72f988bf86f141af91ab2d7cd011db47%7c1&sdata=XqQx5DefhhEvuhrne%2f%2bwyze%2fZIC1qFuQ30xW1nlBCv4%3d
Your local telephone and internet company - 805 884-6323 - WB6RDV

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