Secure Information Handling
All users are responsible for safeguarding and monitoring sensitive data against unauthorized disclosure, modification, and destruction. Sensitive data may be used only for KCTCS related business in accordance with its policies and standards. A wide variety of third parties have entrusted their sensitive data to KCTCS for business purposes, and all employees should safeguard the privacy and security of this information.
KCTCS ensures that sensitive data is properly handled, whether being transmitted within the organization or to a trusted external third party. This document provides guidance on how to handle sensitive data, including the physical security requirements and the distribution of sensitive data internally and externally.
DLP and Safeguards - What is DLP?
Data loss prevention (DLP) helps to reduce the risk of users sending sensitive or critical information both within and outside the KCTCS network. The term describes a solution that helps security and enterprise administrators safeguard the data that users can transfer. DLP products use business rules to classify and protect confidential and critical information so that users cannot accidentally or maliciously share data, which would put the organization at risk.
Properly Handling Sensitive Data
There are several secure options of handling sensitive data with respect to those who have a business need and on a need-to-know basis. The general breakdown is as follows.
The Use of Microsoft Teams for Transmitting Sensitive Information
Teams is our first recommendation. Any file sent via Teams chat is automatically shared out via the sending user’s OneDrive and would be a more efficient and preferred means of sending sensitive information. This makes it so one does not have to construct sharing links and a follow up email to share your sensitive information. Files sent in this way over Teams chat go to Microsoft Teams Chat Files in the sending user’s OneDrive with permissions for just those in the chat or group chat, which can be revoked at any time, as seen below:
Managing & storing sensitive information in OneDrive
KCTCS promotes the use of OneDrive to help manage the viewing, editing, and distribution of sensitive data elements. OneDrive is an authenticated file and data repository that can be safely and securely accessed and linked to within the body of an email. Simply upload the document containing sensitive data to OneDrive and share the secure link to the document containing the sensitive information within the body of your email. Using this approach, we can securely link to the sensitive data versus sharing the data itself in the body of an email.
We will demonstrate how to securely share a link to your document containing sensitive information in OneDrive below:
To start, go to your familiar MyPath web portal: https://kctcs.sharepoint.com/sites/mypath
Next, click on the OneDrive tile in your list of MyPath tilesets. This will take you to your KCTCS OneDrive directory:
Next, go ahead create a folder that will house all your documents that contain sensitive information. In the example below, we will be working with files that deal with Social Security Numbers. We named the folder SensitiveData, which you would be able to see listed after you have created your new folder:
Any excel files you need to work with that contain sensitive information, just simply place them inside this folder. You can drag them off your desktop into this folder or create a new excel spreadsheet. Here is what this looks like:
If you need to share this with anyone, OneDrive makes this very simple and secure. Just click here and choose who you’d like to share it with. It’s as simple as that and keeps your data secure. Also, it prevents accidental viewing of sensitive information to any unintended recipients!
In this particular example, we have shared this file with another user and this user can only view the file.
If you wanted to allow the user to edit the document, select “Can Edit” instead:
They will receive an email with a link to the document you have shared with them after hitting the SEND button:
Click Either the name of the document or the OPEN button to securely browse the document shared with you!
Encrypting sensitive information via Email:
If you are limited to work only within the body of an email and you are not able to
use Teams or OneDrive, we have presented another option below that is a secure means
of transmitting information.
We will be taking advantage of the “Encrypt” option for encrypting our email. This is available to click on using the Options tab of an email. When replying to a message using the preview pane, this will not be visible. It is best to open the email in full without using the preview pane and then navigate to the Options tab. It will be available to click when creating a new email. We will walk you through how to Encrypt an email below:
1. Select Options at the top
2. Select Encrypt
3. Select Encrypt-Only
Sensitive Data Storage
All documents containing sensitive data should be stored appropriately to reduce the potential for disclosure. Documents should not be easily accessible to unauthorized individuals and any documents containing sensitive information should be placed with identifying information face down on counters and desks. These documents should not be left out on desks or countertops after business hours and should be placed in locked storage bins, locked desk drawers, or other secure areas.
Sensitive authentication data should not be stored after authorization, even if encrypted.
The full contents of the magnetic stripe located on the back of a card, or equivalent data contained on a chip (also called full track, track, track 1, track 2, and magnetic-stripe data) should never be stored. If required for normal business processes, the cardholder's name and primary account number (PAN), expiration date, and the service code elements should be securely stored and transmitted according to the standards presented in PCI v3.0
The card verification code or value (CVV, CID, CVV2), the three-digit or four-digit number printed on the front or back of a payment card, used to verify card-not present transactions should not be retained and need to be destroyed, immediately after processing the card transaction.
Personal identification numbers (PIN) or the encrypted PIN block should never be stored, written down, or shared with unauthorized individuals.
If cardholder data needs to be retained, the primary account number (PAN) should be rendered unreadable anywhere it is stored, including portable digital media, backup media, and logs. PAN is expected to be rendered unreadable using one-way hashes based on strong cryptography, truncation, index tokens and pads, or strong cryptography with associated key-management processes and procedures.
The retention of sensitive data is encouraged across all affected hardware and software solutions that pass or store sensitive information. It is advised that data not be kept any longer than necessary for the purpose it serves.
Sensitive Data Storage on Laptops
In cases where sensitive data is managed or stored on laptops, the information should be encrypted.
Sensitive Data Destruction
All media containing sensitive data including electronic, hardcopy, photocopy, etc., should be destroyed when it is no longer needed for business or legal reasons.
Electronic Media Destruction
Electronic storage media containing sensitive data including hard disks, portable drives, tape media, and CD/DVDs need to be rendered unrecoverable so that sensitive data cannot be reconstructed by secure wiping, degaussing, or physical destruction such as grinding or shredding hard disks.
Hardcopy Media Destruction
All hardcopy materials containing sensitive data that are generated in the course of copying, printing, or other sensitive information handling should be destroyed by shredding, incineration, or pulping processes so that sensitive data cannot be reconstructed.
Strict controls are in place to limit the accessibility of storage media containing sensitive data. All media containing sensitive data should be distributed in a secure manner both internally and externally. If it is necessary to remove computer-readable sensitive information from the secure area, the information must be protected with encryption.
All storage media containing sensitive data should be physically secured at all times.
KCTCS applies data disk encryption to ensure safe removal of hardware and electronic media to ensure sensitive data is secured going into and out of a facility, and the movement of these items within a facility.
If media is not inventoried, It is at risk for loss of identification in the event it is lost or stolen.
Displaying Sensitive Data
When the PAN is required to be displayed, it should be masked to only display the first six and last four digits of the PAN.
Transmission of Sensitive Data
Strong cryptography and security protocols should be used to safeguard sensitive data during transmission over open, public networks. Secure protocols such as SSL/TLS, IPSEC, SSH, etc. are the most effective means transmitting and safeguarding sensitive data.
End-user messaging technologies including e-mail, instant messaging, chat, etc. should never be used to send an unprotected primary account number (PAN).
Safeguards for Documents
All documents containing sensitive data are expected to be stored appropriately to reduce the potential for disclosure. Documents should not be easily accessible to unauthorized individuals and any documents containing sensitive information should be placed with identifying information face down on counters and desks. These documents should not be left out on desks or countertops after business hours and should be placed in locked storage bins, locked desk drawers, or other secure areas.
When discarding documents containing sensitive data, use a cross-cut shredder or place the document in a locked bin specifically designated as a shredding bin where the documents will be retrieved for shredding.