Re: [qmailtoaster] Stopping links like ransomware before delivery

2015-01-27 Thread Dan McAllister

Tony:

There are options in simcontrol to disallow certain extensions in 
attachments (by default, they're .mp3, .src, .bat, and .pif) and by 
adding more (say, .exe?) you can block those attachments completely... 
however there is nothing you can do in the /server /(or in the message) 
that will tell (or force) the email client NOT to run an attachment. 
That is totally the purview of the client software. (THIS IS WHY I tell 
my users to NEVER use the preview pane!)


   In the words of Comedian Ron White: *You've all kinds of plastic
   surgery options that can fix all kinds of ugly... but you can't fix
   stupid.*


By which I mean that you cannot possibly engineer enough safeguards to 
prevent users from doing stupid things.


Afraid that's the best advise I've got on this one :)

Dan McAllister
IT4SOHO



On 1/26/2015 10:46 PM, Tony White wrote:

Hi folks,
  Has anyone any idea how to safely change links in emails to force 
them to not autorun?
A client recently had an email that had a link to ransomware which 
encrypted not only

the users local drive but the mapped drives as well.
  Luckily we had a backup from the prior night so not too big a loss. 
It would have been

better to not have the link autorun in the first place.





--
IT4SOHO, LLC
33 - 4th Street N, Suite 211
St. Petersburg, FL 33701-3806

CALL TOLL FREE:
  877-IT4SOHO

877-484-7646 Phone
727-647-7646 Local
727-490-4394 Fax

We have support plans for QMail!



Re: [qmailtoaster] Stopping links like ransomware before delivery

2015-01-27 Thread Tony White

Hi Dan,
  I agree but it is exceedingly difficult to get clients to follow such
instructions.
  Having said that I am interested in adding a small sed script to simply
modify the http:// link to httDELETETHISp:// in all links. This will effectively
stop any page being called by any browser.  It is also reasonably obvious that
removing the DELTETHIS will allow the page to execute.
  Do you know where it would be best to insert the one line sed script?

TIA

best wishes
  Tony White


On 28/01/2015 02:44, Dan McAllister wrote:

Tony:

There are options in simcontrol to disallow certain extensions in attachments (by default, they're .mp3, .src, .bat, and 
.pif) and by adding more (say, .exe?) you can block those attachments completely... however there is nothing you can do 
in the /server /(or in the message) that will tell (or force) the email client NOT to run an attachment. That is totally 
the purview of the client software. (THIS IS WHY I tell my users to NEVER use the preview pane!)


In the words of Comedian Ron White: *You've all kinds of plastic surgery 
options that can fix all kinds of ugly...
but you can't fix stupid.*


By which I mean that you cannot possibly engineer enough safeguards to prevent 
users from doing stupid things.

Afraid that's the best advise I've got on this one :)

Dan McAllister
IT4SOHO



On 1/26/2015 10:46 PM, Tony White wrote:

Hi folks,
  Has anyone any idea how to safely change links in emails to force them to not 
autorun?
A client recently had an email that had a link to ransomware which encrypted 
not only
the users local drive but the mapped drives as well.
  Luckily we had a backup from the prior night so not too big a loss. It would 
have been
better to not have the link autorun in the first place.





--
IT4SOHO, LLC
33 - 4th Street N, Suite 211
St. Petersburg, FL 33701-3806

CALL TOLL FREE:
   877-IT4SOHO

877-484-7646 Phone
727-647-7646 Local
727-490-4394 Fax

We have support plans for QMail!