I'm getting two errors when logging into the Civi admin back-end. The first is
Remote Profiles Enabled Warning: External profile support (aka "HTML Snippet" support) is enabled in >system settings. This setting may be prone to abuse. If you must retain it, >consider HTTP throttling or other protections.
The second is
Notice: Undefined offset: 1 in >/home/jgsny/public_html/administrator/components/com_civicrm/civicrm/CRM/Utils/>>check/Security.php on line 383
I navigate to system settings using the link in the error message which brings me to Misc settings page. The option "Accept profile submissions from external sites" is set to 'yes'. I change to 'no', save and return to the control panel, and the error message is gone. However, on next login the error is back and the setting has reverted to 'yes'