Unexpected page appears when visiting website

The dialog is garbage and everything in it should be ignored. For example "protected and accelerated" by <whatever> is utter hogwash — an understatement, but a more accurate description would be bleeped out by this site's bad word filter.

It may be a pathetic phishing scam. Clicking that "Click to verify" trap could be bait intended to get you hooked into taking inappropriate actions.

If you should continue to be harassed by it the next step would be to download and run EtreCheck, so write back for instructions.

LostSoul 301281 wrote:

I've recently had this strange page appear while visiting a shops website.

Official Apple Support Community

I haven't visited any suspect sites. And I only bought this MacBook Pro in February direct from an Apple Store.

I've also visited the above site before, on my current MBP, without seeing this page.

It's got me paranoid that there's something on my computer.

[Edited by Moderator]

You can always try a different browser and compare your results.

You have no control over server errors are website coding issues.

I would click no further— you can see the supporting "Imperva" is having problems currently experiencing tracking recent operational updates and issues:

No need to be paranoid just be smart ref: Protecting against malware in macOS

Protecting against malware in macOS - Apple Support

LostSoul 301281 wrote:

It's got me paranoid that there's something on my computer.

No need to worry. That's just a janky web site. I get the following when I try to go there:

For what it's worth that site may very well be janky but it loaded without complaint on my devices here in the US.