The attacks tab says the current count is "100% Below normal". It does not support what you think it supports.

It "lights up" because there are always attacks happening.

Look at the scale. The blue area is 100% below normal. The red are way above normal.

That doesn't make any sense, given that the "traffic" tab's scale says "7% above normal".

The red are the areas with the most attacks, and as you'd expect, they correspond to large population centers. (It's also not very granular, and appears to largely correspond to "where does Akamai have a datacenter".)

It’s a poorly designed graphic that’s hard to get any real info from.

That chart is a marketing tool, nothing more.