People who browse the web on personal computers and Apple devices are about to gain a bit of privacy online. That’s because major tech companies are making it harder for advertisers to use two key technologies that allow them to track individuals across the web: third-party browser cookies and Apple’s ID for Advertisers (IDFA).  As a result, advertisers will have much less power to gather mountains of granular data on what individual web users read, view, and buy online.