[iza]

Wouldn't blocking third-party cookies prevent this? It should really be the default setting at this point.

[flangola7]

Cookies don't save you from having your CPU memory speed profiled

[doctor_radium]

Indeed. Although I'm a little surprised that CPU access isn't one of the features denied through simple anti-fingerprinting measures.

Edit: After a brief search there (thankfully) doesn't appear to be such a straightforward way to measure CPU load. Which of course makes it that much harder to block.