Ask HN: Privacy Concerns re: ga.js (Google Analytics)
Something that has bothered me for several years is he proliferation of websites that use Google Analytics. Clearly, it's an exceptionally useful tool. But is seems to me that it could be a vector for a serious breach of privacy. Let me explain: every time you log into GMail or another Google service, Google presumably logs your IP. Likewise, whenever using a site with Google Analytics (my estimate is that at least 50% of the web's most popular websites use it, if not more), Google also takes down your IP and the website visited. It seems to me that it would be trivial for Google to assemble a rather complete web history for most people with a google account (let alone history for an arbitrary IP) in this manner. Perhaps this is old news and certainly there are other more grave violations of privacy on the net and via other mediums. But I have never heard the this particular tact discussed and would love to hear others thoughts on the issue. I wish I had an established blog, in which case I would link to a post about this matter. But this seems like a decent stand-in.
A short addendum: I suppose it would be possible to mitigate the effcts by blocking Google Analytics at the hosts level/by blocking JS, though either could have undesirable effects at some level.
Another addendum: one thing that makes this so troubling is that it potentially works across devices as well (mobile devices, desktops, etc.)