Sorry herewith is the attachment.

TomJMeyer said

Sorry herewith is the attachment.

Hi   Tom,
When you click on   'Details',   what does it say   ?

See FredMcD's post:   DON'T   click on it   !!!

DON'T ! ! ! Contact Kaspersky directly. That link could be a fake.

FredMcD said

DON'T ! ! ! Contact Kaspersky directly. That link could be a fake.

GOOD   ADVICE   !!!!
What was I thinking   ?!
I am sooo sorry   !

Try temporarily disconnecting your router|wifi|cable or whatever or alternatively use Firefox's work offline mode.

Alt+F,K  (brings up the menu & toggles the offline setting)

The popup may just be an internal notification from Kaspersky's installed software and should be safe to click on the notification if you are offline. I do not use the Kaspersky software so no idea if it has such a genuine screenshots protection feature.

I have just called Kaspersky and explained the whole situation.
They assured me that this is definately  not   a   Firefox-issue.
The pop-up seems to be genuine,   and they strongly advice   TomJmeyer   to contact them, so that they can explain to him why he is getting this notification and what to do next.

I have heard the term protected browser bandied around in respect to Security software, but it is worth remembering that Firefox does by default have built in protection against malware & phishing sites.

• How does built-in Phishing and Malware Protection work?

I think some of these third party features are of only speculative value, and often end up causing problems if the free bundled software does not update when Firefox does.