If anyone from IT calls you, you should be able to call them back at their extension. Or that's a red flag. We used to have fun with William the "Windows Tech

If anyone from IT calls you, you should be able to call them back at their extension. Or that's a red flag. We used to have fun with William the "Windows Tech team agent" (from India) . He (They) would call us at least once a week. I think they might have had a successful attempt otherwise why would they keep calling.