I do not have the data to support my conclusion, but myself and others have noticed the sharp increase in email phishing attempts that include only a phishing message and a phone number to call. There are no embedded links or file attachments, and the subjects are just plausible enough that I can see them slipping by normal phishing filters and tricking some very small percentage of people.
originally published onhttps://blog.knowbe4.com/phone-number-only-phishing-on-the-rise
