Hi Bob - I don't think they're targeting the Sphere specifically, but are just targeting it because it's there and they feel they can. Moreover, they're using faceless web bots they've let loose to boldly go and scavenge the web and report back with any vulnerabilities they can then exploit for ill or gain. The problem is that these days, it's not limited to the Sphere but to any website of any significance. And I guess we should be masochistically flattered that we're significant enough to them to be bothered with. Finally, I believe that the reason why the evil bots and other such spam and denial of service attacks have escalated these days is because the skill required to deploy them has significantly decreased: specifically, the really skillful hackers are now selling them in the dark web an other such venues to any amateur/hobbyist hacker and/or criminal element with some spare cash at their disposal.
Cheers,
...Alex
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