Remember, your demat account is your long term wealth and you cannot afford to be lax with security issues. Some basic issues have to be ironed out. Don’t leave your DIS booklet unattended. Keep it in a safe and secure place. Always insist that your DP must issue a DIS booklet with your client code stamped on the DIS. After you mention the number of shares in words and the ISIN, if there is any blank space then just cancel it out to avoid misuse. If you are using online DP, there are some more precautions you need to take. Keep a double authentication for your DP access and don’t share your password with anyone. Always make it a point to access the DP account online by yourself and from your own computer using a secured internet connection. Accessing your demat account on free Wi-Fi facilities in airports, shopping malls is a strict “No”.