If you were expecting some highly confidential (encrypted) files, that’s fine.
If you’re not expecting any files, don’t open them – this is standard computer practice.
If you know and trust the sender:
Download and install AxCrypt.
Type in your email address and a password you will never forget.
Check your email for a confirmation link.
<p style=”text-align: left;”>Now double click on the files that they’ve sent you.</p>