[ZendTo] Antwort: Re: Antwort: Re: Security Issue - Data Leakage Prevention

patrick.gaikowski at kaufland.com patrick.gaikowski at kaufland.com
Thu Mar 1 11:27:28 GMT 2012


Hi Jules,

USB is prohibited in our company and Personal Network Storages like dropbox
etc. are blocked because of Contentfilter.

Users from company who have the right in LDAP should upload files to
anywhere they want. The is a workflow behind requesting this right.

But my focus is if a user has not the right for logging in. In this case he
makes a dropoff to his own address in company, because Freemail addresses
are also blocked because of Content Filter.

Is there a possibility to check the email in the verify.php if the user is
unregistered?

Mit freundlichen Grüßen / Best regards

Patrick Gaikowski
Tel:     +49 7132 94 3568
Fax:    +49 7132 94 73568
E-Mail: patrick.gaikowski at kaufland.com
KI 967850: IT International / IT Governance / Netzwerk Design und
IT-Sicherheit
Office:
Lindichstrasse 11
D-74189 Weinsberg



http://www.kaufland.de
http://www.spannende-it.de
Wir sind die Nr. 1:
Kaufland ist "Bester Lebensmittelmarkt 2011"!

Kaufland Informationssysteme GmbH & Co. KG
Postfach 12 53 - 74149 Neckarsulm
Kommanditgesellschaft
Sitz: Neckarsulm
Registergericht: Stuttgart HRA 104163







                                                                           
   Jules <Jules at zend.to>                                                   
   Gesendet von:                                                           
   zendto-bounces at zend.to                                                  
                                       ZendTo Users <zendto at zend.to>       
                                                                           
   01.03.2012 12:18                                                        
                                                                     Thema 
                                       [ZendTo] Re: Antwort: Re: Security  
             Bitte antworten           Issue - Data Leakage Prevention     
             an                                                            
             ZendTo Users                                                  
             <zendto at zend.to>                                              
                                                                           
                                                                           
                                                                           






On 01/03/2012 11:04, patrick.gaikowski at kaufland.com wrote:


      Hello Jules,

      yes i mean someone working for my company.

      My idea would be some kind of "blacklist" for email domains used in
      unregistered dropoff. Is there a possibility to implement it?


I don't quite see why this is only a problem with "unregistered users", by
which I guess you mean people from your own company who haven't logged in?

People who have logged in will be able to do the same.

Note that ZendTo does log the IP address a drop-off came from, so you would
be able to see who had done it by looking through your logs.

Why doesn't the user just copy it onto a USB stick that they have in their
pocket? Surely that's simpler? Or upload it to any of the various free
cloud storage services there are (such as Dropbox, Evernote, iCloud,
SkyDrive, etc etc)?

Jules.




      What other things can a do, not to prevent it completely, but
      decrease the possibility.

      Mit freundlichen Grüßen / Best regards

      Patrick Gaikowski
      Tel:     +49 7132 94 3568
      Fax:    +49 7132 94 73568
      E-Mail: patrick.gaikowski at kaufland.com
      KI 967850: IT International / IT Governance / Netzwerk Design und
      IT-Sicherheit
      Office:
      Lindichstrasse 11
      D-74189 Weinsberg



      http://www.kaufland.de
      http://www.spannende-it.de
      Wir sind die Nr. 1:
      Kaufland ist "Bester Lebensmittelmarkt 2011"!

      Kaufland Informationssysteme GmbH & Co. KG
      Postfach 12 53 - 74149 Neckarsulm
      Kommanditgesellschaft
      Sitz: Neckarsulm
      Registergericht: Stuttgart HRA 104163







            Inactive
          hide details for Jules ---01.03.2012
            10:28:39---Jules
          <Jules at zend.to>Jules ---01.03.2012
            10:28:39---Jules <Jules at zend.to>
                                                                           
       Jules <Jules at zend.to>                                               
       Gesendet von:                                                       
       zendto-bounces at zend.to                                              
                                                                           
                                                                           
       01.03.2012 10:25                           ZendTo Users             
                                                  <zendto at zend.to>         
                                                                           
       Bitte antworten an                                                  
       ZendTo Users                                                        
       <zendto at zend.to>                                              Thema 
                                                                           
                                                  [ZendTo] Re: Security    
                                                  Issue - Data Leakage     
                                                  Prevention               
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           


      By "unregistered user" do you mean someone who works for your
      company? If so, ZendTo won't stop them stealing files from your
      company. No-one can stop that unless you cavity search your employees
      at the end of each working day.

      Jules.

      On 29/02/2012 17:06, patrick.gaikowski at kaufland.com wrote:

            Hallo Jules,

            one of my colleagues pointed a scenario out where he could
            upload a file to outside the company without rights to do it.

            For us it is a big security issue!

            1.) unregistered user clicks on Drop-Off and sends an email to
            his company email address
            2.) unregistered user uploads a file from company network to
            his own company email address
            3.) unregistered user forwards the upload information to his
            private email address from Mail Client
            4.) unregistered user Picks up the file from his private PC

            My question is, if it is possible to exclude the company email
            domains, like defined in preferences.conf, from getting an
            upload link to corporate email without Authorization?

            Mit freundlichen Grüßen / Best regards

            Patrick Gaikowski
            Tel:     +49 7132 94 3568
            Fax:    +49 7132 94 73568
            E-Mail: patrick.gaikowski at kaufland.com
            KI 967850: IT International / IT Governance / Netzwerk Design
            und IT-Sicherheit
            Office:
            Lindichstrasse 11
            D-74189 Weinsberg


            http://www.kaufland.de
            http://www.spannende-it.de
            Wir sind die Nr. 1:
            Kaufland ist "Bester Lebensmittelmarkt 2011"!

            Kaufland Informationssysteme GmbH & Co. KG
            Postfach 12 53 - 74149 Neckarsulm
            Kommanditgesellschaft
            Sitz: Neckarsulm
            Registergericht: Stuttgart HRA 104163








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      Jules

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      Julian Field MEng CITP CEng
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      'It's okay to live without all the answers' - Charlie Eppes, 2011
      'All programs have a desire to be useful' - Tron, 1982
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Jules

--
Julian Field MEng CITP CEng
www.Zend.To

Follow me at twitter.com/JulesFM
PGP footprint: EE81 D763 3DB0 0BFD E1DC 7222 11F6 5947 1415 B654

'It's okay to live without all the answers' - Charlie Eppes, 2011
'All programs have a desire to be useful' - Tron, 1982
'That is the land of lost content,
 I see it shining plain,
 The happy highways where I went,
 And cannot come again.' - A.E. Houseman
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