In the last two days I have a recurring message that I am unable to delete despite rebooting my 2025 iMac! The mesage is: "SmartSignalSearch" was not opened because it contains malware. This action will not harm your Mac." When I press the Done button, nothing happens. There is a Trash button to dump this message. I did a search to find where this malware could be. Nothing! I am grateful that my Security & Privacy functions are working, but how can I dump this Malware Blocked notice off my screen? Thanks for any help that you can offer!