It scared me. Thank you so much. I installed the free version of wordfence for now. I will talk to the charity about paying for the up to date protection.
It also transpires that somehow in updating our server to bookworm and WordPress to 6.9.3, some permission has been mis-set and I can't upgrade to 6.9.4 or manage the wordfence firewall. This will be a job for tomorrow. We need a proper system admin back :(
