You can read the details here: https://www.wired.com/images_blogs/threatlevel/2012/05/unredactedfccgoog.pdf https://www.wired.com/images_blogs/threatlevel/2012/

You can read the details here: https://www.wired.com/images_blogs/threatlevel/2012/05/unredactedfccgoog.pdf https://www.wired.com/images_blogs/threatlevel/2012/05/unred... including (on page 15) quotes from emails that state "We store the whole body of all non-encrypted frames" and discussed an analysis of HTTP URLs extracted from sniffed wifi data.