Computer help: How to Deny Someone From Forwarding An Email You've Sent Him
How to Deny Someone From Forwarding An Email You've Sent Him
by corolla315 - 6/19/07 10:37 AMHi Guys,
As the subject denotes, I would like to know whether it's possible to deny someone from forwarding an email that I've sent him myself earlier. In the sense that I have a file in PDF format which I need to attach in this email but since the PDF file contains sensitive data, I need ONLY the intended particular recipients to receive my email; in a way that these same intended recipients won't be able to forward my email to third parties. Similarly it's important that the recipients won't be able to copy this file on their Hard Disk [C:] as then it will be very easy for them to forward the file as a new attachment in a new email.
Just to make it clear, the contents in the email itself are not a problem if they are copied and forwarded; my concern is only the PDF file attached, that is, how I can prevent the file I attached from being distributed to non-intended recipients or to third parties.
The PDF file attached I need to send is already in READ ONLY format and the recipients can't copy the contents by a simple COPY PASTE but my concern is still the one mentioed above as presently they still can forward my email to third parties.
In this regard, can someone help me out please? Maybe you know of a setting I can do in my email account settings or a software which can help me solve out my problem? Or maybe from Adobe Acrobat Professional itself...
Just to let you know, preferably I'd like to use my GMAIL account to send this email but please feel free if there's a solution related to other email programs other than Web-based e-mail services like Gmail.
I thank you in advance for any comments and assistance.
Best Regards,
Corolla
my advice would be
by jonah jones
- 6/19/07 10:40 AM
In reply to: How to Deny Someone From Forwarding An Email You've Sent Him by corolla315
send the PDF file as an attachment in a second email (possibly with a note asking that it not be forwarded or shared?)...
jonah
.,
come on..........!!
by corolla315 - 6/19/07 10:59 AM In reply to: my advice would be by jonah jones
It's like I'm telling them please forward my email...:-)
thanks anyway
The only way this can be done is
by PudgyOne - 6/19/07 11:03 AM In reply to: How to Deny Someone From Forwarding An Email You've Sent Him by corolla315to encrypt the email. You need to have a digital signature and certificate.
Not sure much about that information.
You send emails
Most people will forward them
Your email address travels with it
Keep a special email account for your fun things
Keep an email account for your personal use
Make an email account for newsletters
If you have a website, make an email account for the website only.
Your email address will be posted in almost every email forwarded. A spammer will eventually get your email address and try to spam you. This is why you need to keep things seperate.
Remember once you put things into writing, email or whatever, anyone can see your information.
Best advise...
Don't put anything into an email that you don't want anyone else to read. If you want to send someone an email and talk about me, remember the email might get back to me. You would not like that, so don't do that to others.
Never do an email in angry.
You might be able to send the email in bitmap format. Some people cannot forward bitmaps very well. They tend to leave blank squares.
If it's very important and work related, then you need a digital signature and certificate and need to encrypt the email.
I also remember that there was a program, you put your document into it. Add a password. The person on the other end needs a password to open the folder. I don't remember the name of the program.
Hope this helps.
Rick
Secure attachments
by dolbyg - 6/23/07 8:44 AM In reply to: The only way this can be done is by PudgyOneYou don't remember the name of the program where you put your document(s) into it and add a password. The person on the other end needs a password to open the folder.
That's WINZIP. You must check the password option and enter a password as you create a ZIP file. Nobody can get into the files without that same password.
It also works as a security measure on your own computer. People exploring your files will hit a dead end at this file. I do that on mine, just as I do with everything in OutLook.
Put all files to be attached to an e-mail into a secure ZIP file and attach the ZIP to the e-mail, instead. Give them the password some other way. Don't put the password into that e-mail!
You can access WINZIP from your explorer with a right click on the file(s) to be zipped. It's obvious from there, but you are best off using the "Zip and e-mail plus" selection.
As all these other replies said, you can't stop anybody from making a copy. However, extra steps are needed this way. You can make it tougher by choosing a password that they would forget within 10 seconds. How about "5yP4cX27z0o1". That's a zero, not an oh. They must match the case of each letter, too!
So...
by jackson dougless - 6/23/07 9:17 AM In reply to: Secure attachments by dolbygWhat's stopping the person from simply passing the password along to someone else, or someone else using a password cracking program on the archive?
Passwords and the like really only stop the honest people. Someone who wants to get something for free (or at least a greatly reduced price) will find a way. That's just how things are in the real world.
The game console industry is a great example of this. The early cartridge based systems required special hardware to be able to read the data off the cartridges, but that didn't stop people from making ROM dumps and working on emulators. Then there was a shift made to using CD/DVD media instead, and special codes were inserted into original game discs that couldn't be duplicated. And so was born the modchip, which originally just tricked the system into always thinking it was reading a commercial game disc. Later that whole system was bypassed. If you look at the original Xbox, people have taken the firmware and hacked it to add new features and remove security checks. Then there's what was done with the PSP. A workable exploit found in a specific firmware version is how one custom firmware maker bootstraps later firmwares, so people can have the best of both worlds. With the Xbox 360, people have attacked the DVD drive's firmware to trick it into reading burned discs.
You could also follow the huge amounts of money the movie and music industry have pumped into various protection systems. The latest system, used to protect HD-DVD and Blu-Ray discs cost several million dollars to develop, and lasted all of about 3 months before it was cracked. The supposed advantage of this new system is it has a system for revoking keys if they're cracked, but then within about 24 hours of issuing a new key, it was once again cracked.
It's an impossible battle to win. Nothing you do will stop a sufficiently motivated person. Trying to increase the pain in the @$$ level really only serves to annoy and punish those you WANT to be able to access the content.
You can't
by jackson dougless - 6/19/07 11:39 AM In reply to: How to Deny Someone From Forwarding An Email You've Sent Him by corolla315All you can do is ASK the person not to forward things along, but there's no means to prevent them from doing so if they are so inclined.
This is the same problem the movie and music industry is trying to come to grips with on DRM (digital rights management). If someone else can read/watch/listen to it, it can be forwarded/copied, and that's all there is to it.
You can try adding a legal notice at the end of messages, so you could potentially sue the person after the fact if they send it to others, but it really doesn't do much about the issue of other people having copies of the PDF in question. You can try tracking them down and suing them, but they may have sent the file on to yet more people, and it can quickly balloon completely out of control.
non-disclosure agreement
by ramarc - 6/19/07 2:49 PM In reply to: How to Deny Someone From Forwarding An Email You've Sent Him by corolla315you need to get the recipient to agree to an NDA. it won't stop him/her from forwarding the confidential document, but you will have legal recourse.
I've no idea, However...
by Jamfan55 - 6/22/07 5:51 PM In reply to: How to Deny Someone From Forwarding An Email You've Sent Him by corolla315it would surprise me if some enterprising soul hasn't devised a means whereby such a message might be made to "self destruct" when opened by anyone but the original addressee. And I know there are means of preventing some documents from being copied, or saved to their HD, though I've only seen them in PSP type programs myself
Secure PDF
by gck105 - 6/22/07 6:50 PM In reply to: I've no idea, However... by Jamfan55I have no idea how it is done, but I purshased some building plans online. The plans were sent to my in pdf format,but I had to enter a code in order to open the file. If I remember correctly the file could only be opened one time. I had to print it to keep the plans. I am not sure if that is an option when creating pdf files. I have limited experience with that. Hope it helps.
One problem with that
by jackson dougless - 6/22/07 7:58 PM In reply to: Secure PDF by gck105It all depends on the PDF reader program to honor those security measures. Adobe's reader program will obviously, but they can't make third party readers, like Foxit Reader and Xpdf, respect them.
They could still be scanned
by Dragon - 6/27/07 8:40 AM In reply to: One problem with that by jackson douglessafter being printed, and then passed on to a number of people.
Give kablooeymail a try
by BlueKnight - 6/25/07 9:04 AM In reply to: I've no idea, However... by Jamfan55Take a look at www.kablooeymail.com. Free e-mail that will self-destruct after being read by the recipient. This is pretty cool.
I say it can't be done.
by BassBinDevil - 6/22/07 6:47 PM In reply to: How to Deny Someone From Forwarding An Email You've Sent Him by corolla315Contrary to what people may have learned from watching X-Files, anything that can be seen can be copied. Even if you could prevent them from saving or forwarding the message, they could still do a screen capture, take a snapshot of the screen with a camera, or just type it up as a new document.
About the best you could hope to do is send each recipient a slightly different version of the document, so that if a leaked version shows up you'll know who's guilty.
I Agree
by 1159skunk - 6/23/07 2:32 AM In reply to: I say it can't be done. by BassBinDevilIf someone wants to forward it bad enough then they will, there is ALWAYS a way
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