See this first part and second part for more detailed context and background, as well as an important disclaimer

How hashing is done and when (above)

Microsoft stuff is mentioned here (PhotoDNA)

NCMEC and hashing

NCMEC background

Agencies involved

Now we come to Google

Chrome is also mentioned. Ryan: "It's logging all of your data in the "cloud". This can be put on another DVD and FedEx'd to Officer Friendly."

Some of the Comcast angle was covered last month; today we focus on Google

Items (8) and (9) speak of GMail and Google Drive, with (10) alluding to Picasa, which no longer exists. Ryan: "They kill their products so fast you don't even know what's going on. Talk too."

Ryan: "Then they gag Google so they can't tell you about the warrant even if they wanted to." Google challenged this in court when Wikileaks staff was targeted.

This is the full letter from Google (3 pages)

Notice there's also a Microsoft (MSN) account. He works directly for Bill Gates (in Bill's home), so it's unlikely he uses that other account for child porn.

Summary: Chrome, Picasa, Talk, Drive, and Gmail among the Google "products" (or "services") that police gets or got access to, as revealed in documents prepared by the police for the courts. These pertinent bits are optimised or leveraged for snooping, often with little oversight and always the presumption of guilt (everything is logged and preserved indefinitely, even after account deletion). As Ryan puts it: "All his GMail email, the entire contents of his Google Drive, and all of the photos and videos (which Android phones automatically back up to Google Drive now)."