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Security Center

Computer Security

Click to go to information on each topic.

firewalls automatic updates
malware blocker cautious downloading
pop-up blocker trusted computer
secure networks user IDs


There are several steps you should take to increase the security of your computer, which can help to protect your personal and financial information.

Use a personal firewall.

To guard against unauthorized access, make sure you have a personal firewall installed on your computer and that it is turned on at all times. Many Internet service providers offer a personal firewall feature.

Set automatic updates.

Make sure your computer operating system (Windows for example) and your web browser (such as Internet Explorer) remain secure against the latest threats. Turn on automatic updates for both. Doing so provides security updates and patches that protect against the latest criminal attempts to attack your computer.

Install software that detects and blocks malware.

Malware is malicious software that is installed on your computer without your knowledge. It includes viruses, spyware and adware that infect your computer with harmful intent, for example to capture your login passwords or other personal data. By installing malware-detecting software, commonly referred to as antivirus and antispyware software, you can set it to update automatically to guard against new risks.

Be cautious of downloading software from the Internet.

Only install applications and software from well-known companies you trust. Many times, software downloaded from the Internet, such as free games, carries and installs malware.

Use a blocker for pop-up windows.

Typically, a pop-up blocker is available as a feature of your browser (such as Internet Explorer). Don’t click on any links within pop-ups, as this may install malware on your computer.

Use a trusted computer.

When conducting Online Banking and financial transactions, it is best to use a trusted computer, preferably your own.  It is a good idea to clear your computer browser's cookies and cached files, as they can store information about your Online Banking session. Refer to your particular browser’s “Help” feature for directions on clearing cookies and cached files. Close the browser window when you are done. 

It is not recommended that you use a public computer for online banking. When you use a public computer, there is the risk that the computer could have malware or a person using it after you could sign on to your account.

Avoid unsecured wireless networks.

Networks in cafes, hotels, airports, libraries and other public places are usually not secure and are easy to tamper with. Even if you are provided a password, that does not guarantee a secure connection. If you are unsure about the security of a public network, it is best not to conduct Online Banking while using it. For more information about using public Wi-Fi networks, visit the FTC OnGuardOnline.gov web site.

Create strong User IDs and Passwords.

When creating your user ID and password for Old National Online Banking & Bill Pay, you should put careful thought into creating the most secure log-in credentials possible. Following are some general guidelines for creating user IDs and passwords.

  • Use at least eight characters (more is better) and a combination of uppercase and lowercase letters, numbers and punctuation.
  • Don’t use single words that can be found in any dictionary of any language.
  • Don’t use personal information that can be easily obtained from social media sites and avoid using a family member’s name, a pet’s name, your birthday, etc.
  • Don’t use the same words that you use for any passwords outside of Online Banking or that you use in your email address.
  • Base your user ID and password on something memorable, so you aren’t inclined to write it down.
  • Change your password at least every 45 days.

Don't share your Old National user ID or password with anyone. Never give it to anyone who asks for it via email, phone or any other form of communication, even if they say they are from Old National. We will not ask you for your Online Banking ID or password.

PLEASE READ: Information security best practices continue to change and evolve. The information and guidance provided to you online in this Security Center is not intended to be an all-inclusive checklist. You should consult with a qualified information security professional to determine the appropriate security tools and controls for you and/or your business.

Reporting a compromised
User ID

If you suspect someone has your Old National Online Banking user ID or password and is attempting to access your account, reset them and contact us immediately at