Russian cyber-attack spree shows what unrestrained internet warfare looks like

No. The headline is misleading. Internet warfare would see utilities stop working, or worse, transport systems grinding to a halt or perhaps falling out of the sky, financial systems crashing…you get the picture. However, this does give a glimpse of the capabilities that nations have built…:

[…] The US indictment of six Sandworm operatives, all GRU military intelligence officers, gives a detailed account of how they went about their business.

In preparation for the attack on the Olympics they studied the tactics and style of their North Korean counterparts, the Lazarus group, so they could mimic them and throw suspicion on Pyongyang.

Original article here