On 3/7/2018 4:12 AM, Stefano Bagnara wrote:
On 2 March 2018 at 21:45, John Johnstone
<jjohnstone-mai...@tridentusa.com> wrote:
One concern with respect to hat color I was thinking about was if there
is a significant security threat from spear-phishing that is facilitated
by the validating / guessing. From what has been mentioned so far, it
seems not to be.
That said, some ESP have a different opinion from me, as I just read
this recent post:
https://www.campaignmonitor.com/blog/email-marketing/2018/03/verifying-emails-win-win-email-marketing/
PS: between the many email verification tools, Kickbox
(https://kickbox.com/about) have a claim "Kickbox is a white hat
service provider".
I find it interesting that logs here show briteverify using quite a few
addresses of what seem to be guessing attempts with combinations of
first name / last name / initials. Although their combinations are not
as extensive as the first ones I cited, if these addresses only come
from subscribers lists, how could these combinations get into these
lists in the first place? Definitely not from "List decay". There is
definitely a bad smell coming from someplace. In addition, some of the
addresses they're verifying have been invalid for 15 years. "Decay" for
those set in a pretty long time ago.
-
John J.
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