Is there a way to identify potential malware/scamware? saluqi in Windows 10 Discussion

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Home WiFi network with 2 computers: Desktop Dell XPS 8700 running Windows 10 Professional 64 bit, laptop Dell Inspiron 15R 5537 running Windows 10 Home 64 bit. Both Version 1909, build 18363.900. At present, AFAIK there is NOTHING WRONG and both machines are working normally. My question concerns how to identify potentially dangerous E-mails (etc.