| 
 Alert: Hackers want your passcodes! 
If you use Duo passcodes, always make sure the browser address bar on the Duo view has the lock symbol and starts with cas.columbia.edu or https://cas.columbia.edu.  | 
    | 
 Alert: Hackers want your passcodes! 
If you use Duo passcodes, always make sure the browser address bar on the Duo view has the lock symbol and starts with cas.columbia.edu or https://cas.columbia.edu.  |