It is protected by 256-bit AES encryption and no one, not even God will figure it out.

Just how rock-solid are your data access, encryption, and disposal policies?

I shred all of the paperwork after scanning and storing on an encrypted office network.

You might not need the full birthday for a landlord reference, but it might be a good idea to list at least the year, to filter out any obvious mismatches (for example, prospective tenant was born in 1995, making him 23 or 24 today, but you rented to a 47-year-old man).Encrypted email has been available, for free, since at least the early 1990s, but hardly anyone uses it. 

I tell my clients on the first day we meet that wire instructions will only come from the title/closing agent as encrypted documents and that they will need to look-up the phone number for the title company before calling to confirm the instructions were sent and are accurate. 

As someone with a background in computer security: Your instincts regarding the insecurity of sending private information via email are good.Never send anything via email that you wouldn't feel comfortable mailing on a postcard unless you use a specialized encryption tool that encrypts data while in transit (you'd know if you were, because they're typically hard to set up and a pain to use).

Hide the SSID (not terribly secure, but will keep non-savvy off the network) and use WPA, not WEP, encryption with a complicated, but easy to remember password.

This protocol provides security for your information by encrypting it as it travels from your computer to our computer.

We encrypt all passwords and don't have any way of recovering them other than to re-generate a new one if someone loses it.

Record integrity is managed with hashing, encryption and secure retention and storage to ensure the document has not been altered.DocuSign and HelloSign are a couple legally authorized eSignature options.