It isn't just your browser tracking your online activity...
Your computer's hardware may be tracking since the day you bought it.
"Lenovo was inserting spyware...in its PCs. This software could track customers’ every online move, intercept secure web sessions and render their computers vulnerable to hackers."
Lenovo and Superfish Penetrate the Heart of a Computer’s Security
By Nicole Perlroth
"The Chinese computer-making giant Lenovo was inserting spyware — its defenders would call it adware — in its PCs. This software could track customers’ every online move, intercept secure web sessions and render their computers vulnerable to hackers.
The company buried its software in the lowest level of a PC’s operating system, precisely where customers and antivirus products would never detect it, and had been siphoning data back to servers belonging to Superfish, an Israeli software company headquartered in Silicon Valley that markets itself as a visual search company...."