Caller claimed that my computer has a WIndows Defender that was corrupted and causing problems when I opened my e-mails. When I asked for  a WIndows website that I could check for legitimacy of the issue before I followed his directions on what to type on my keyboard, he told me to check www.pcguardian.com website first and that he could call back shortly  to follow up.
Initial caller sounded like Eastern Asian Indian (Pakistani?) who passed me her technician (Indilan/Pakistani also) who started with the instructions on what to type.