screenshots show >BC.GDU1gp. email phishing.DblDom-33 and .BC.59g3pv. email.Trojan-925

and a proxy setting " bypass proxy settings for these hosts & Domains." *.local, 169.254/16
I have noticed for the first time in system preferences / network/ advanced / proxies

Any advice please? Mac OS 10.14.6 running.

All these files appeared during an overnight iMac check by Clam XAV, were quarantined, and I have trashed and emptied the quarantine folder.

I have not encountered any such issue for years, apart from the occasional Win nasty hidden in an email or document.