To report a lost or stolen card with Alliant Credit Union, it is important to act quickly to protect your account. Members are typically encouraged to log in to their online banking account or mobile app to access the necessary options for reporting a lost or stolen card. If online access is not available, contacting Alliant directly through the phone number listed on their official website is the best alternative. This ensures members can reach the appropriate support team who can assist with suspending the card and issuing a replacement. For future reference, it is advisable to review the current web pages for the most accurate and updated contact information and specific procedures. Always remember to monitor account activity regularly for any unauthorized charges until the situation is resolved.