How Secure is Internet Faxing?

Online Fax Security

The security of fax transmissions is especially important to healthcare, legal, and financial entities. Even occasional users may wonder if Internet faxing, despite its many advantages, is secure enough to protect their privacy when sending confidential information. The answer is, it depends...

First, let's compare Internet fax security to the security of normal fax transmissions over phone lines. Both are susceptible to eavesdropping and diversion of transmissions, unless special precautions are taken. In the case of Internet faxes, encrypting a digital transmission or uploading it to a fax server over an encrypted Web connection provide sufficient protection against interception of your document. You should make sure that these security features are supported in any Internet fax service you consider.

Faxzero, an online faxing service I recommend, does encrypt all data before transferring it to their fax servers. In addition, their privacy policy states that they will not release personal information (such as your name, fax number or email address), nor information about the people you send faxes to, unless a court order compels them to do so. But once your document is received by the Faxzero server, it must be transmitted over a good old-fashioned telephone line in order to land on that good old-fashioned fax machine that you want to reach.

Faxes travel across the public telephone network, and are subject to potential interception by motivated hackers. That's not a weakness in Faxzero, it's just the way traditional faxing works. See my related article Top Online Fax Services for a list of options to help you send or receive faxes over the Internet.

Email-to-fax services can be spoofed, meaning someone can fake your email address in a message header and send faxes in your name. If you pay for Internet fax service that means you may be stuck with someone else's fax bill. A good Internet fax service sends a confirmation email back to the sender's email address with every fax it sends, providing an alert that an unauthorized fax was sent using your account.

Digital Delivery Offers Enhanced Fax Security

Normal faxes end up printed and deposited in a fax machine's receiving tray, where they lie until someone comes to retrieve them. These paper copies are exposed to everyone who has access to the fax machine, and may be accidentally (or purposely) read by people searching for their own faxes in the stack. Email-based Internet fax delivers faxes directly to the addressee's inbox (instead of a fax machine), where it's less likely to be seen by others.

However, if you receive your incoming faxes as unencrypted PDF documents attached to e-mail messages, those attachments are no more secure than the e-mail messages to which they are attached. It's not likely that anyone is intercepting your emails, but it is technically possible. Using a webmail service like GMail or Hotmail that provides the option to turn on encryption via HTTPS solves this problem.

Another security scheme stores received faxes on an online server. An email notice sent to the addressee contains a web link which points to the digital fax document. When clicked, the link opens a Secure Sockets Layer (SSL) connection to retrieve the document and display it in a browser, from which the recipient can save or print a copy. So the faxed document is never exposed on an unsecured Internet connection.

It's hard to control the security implemented by business partners. If you send an Internet fax to a partner's fax machine number, the printout is subject to the security vulnerabilities noted above. If possible, you should get your partners to use a more secure all-digital Internet fax solution such as fax-to-email or the SSL method described above. Hopefully, they're just as concerned with security as you are.

Bottom line, my take is that internet faxing is more secure than using good old-fashioned office fax machines, because encryption is typically NOT used when sending from one machine to another, across the public telephone network. But because encryption is used by online fax services (in at least part of the journey), and faxes can be delivered directly to the recipient's inbox, online faxing is a more secure option.

Do you have something to say about the security of online faxing? Post your comment or question below...

Source: http://askbobrankin.com/how_secure_is_internet_faxing.html

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