Erwin Craps - IT Helps
Erwin.Craps at ithelps.be
Mon Dec 19 08:17:01 CST 2005
Securing with a static password is not an option because it would be given by the user. I suspect this already for the current website access where I Log IP numbers today. A dynamic password using a token (Digipass type using public/private key) would be a posibility but expensive and would need more technical intervention. But i don't know if Excel supports that. Erwin -----Original Message----- From: dba-tech-bounces at databaseadvisors.com [mailto:dba-tech-bounces at databaseadvisors.com] On Behalf Of Tina Norris Fields Sent: Monday, December 19, 2005 2:23 PM To: Discussion of Hardware and Software issues Subject: Re: [dba-Tech] Securing Excel File to avoid E-mail forwards Hi Erwin, I agree with the comment that once you have forwarded a file to someone, you have no further control over it. However, as far as protecting the Excel file from prying eyes, would it be sufficient to password protect it for opening? Then, it is available only to your recipients who know the password (unless a recipient gives away the password, of course). The idea of building in some code that logs things like the date and name of user, all of which gets hidden in the Excel file itself is appealing. That would allow backtracking if - and this is a big IF - you get hold of a copy of the Excel file after it has been forwarded to a recipient who was not supposed to get it. What an interesting puzzle. If it can be done, someone on this list will think up a way. Best regards, Tina Erwin Craps - IT Helps wrote: >Hi Group > >On a daily basis I send 1 Excel files to about 120 recipients using >E-mail. >The file contains confidential information and is also popular >information for press and other third parties, but may not be disclosed >before the rightfull owner (all of the 120 recipents) decides to do/or >not so for his or here data. >I'm sure this E-mail gets forwarded to other parties that may not >receive this information. >Are there any means today to avoid forwarding this Excel file or >atleast to track back who has forwarded it? > >I would like to hear suggestions from "cheap to expensive", from "helps >a bit to helps a lot". > >Some additional remarks: >-I would like to avoid sending 120 slightly different Excel files >instead of "1 for all". >-Excel file is obligatory. >-Normal Excel file operation for the recipient, changing, adding, >deleting content etc. >-Avoiding 24x7 server availibility at my office for on-line >verification or logging or whatever. >-I do have an 24x7 internet server, but do not guaranty 24x7 >availibility or even sufficientbandwith. >-The recipients mainly use Outlook, some OE and some are Mac's. > > >Thx > > > >Erwin Craps > > > >_______________________________________________ >dba-Tech mailing list >dba-Tech at databaseadvisors.com >http://databaseadvisors.com/mailman/listinfo/dba-tech >Website: http://www.databaseadvisors.com > > > _______________________________________________ dba-Tech mailing list dba-Tech at databaseadvisors.com http://databaseadvisors.com/mailman/listinfo/dba-tech Website: http://www.databaseadvisors.com