"How could that be a threat today?"
Almost all email services today scan for some of the malware and you surely would not open attachments.
I'm going with "to hack your PC, you have to help them do it." (by opening a malicious attachment.)
I have an old e-mail address that I occasionally use and I recently realized that potential "enemies" (a group of old friends that we had a huge fight with that could be potential threat in terms of revenge) knows about that e-mail address and I also used one of their wifi on my computer once and my e-mail was logged in. I would like to learn if this could be used against me to somehow hack my computer or something (them knowing my e-mail address and me having used their wifi once) Like I said I barely use that e-mail address. Its normally almost never logged in on my computer anymore I just log in like a couple times a year. Would that be a threat to open that e-mail address on my computer or download some photos I uploaded on there myself? Could they somehow manage to hack my computer just like that? (I never open unknown e-mails or links) Im sorry this is probably a very stupid question, I just want to learn more about potential security issues. Thank you all in advance!