Explaining Increase in Google Analytics Not Provided Keywords

[ck77]

Hi all.

I currently do SEO (inhouse) for a multinational site concentrating specifically on 11 sub domains. Now we've seen the increase in Not Provided traffic grow steadily over the last year but now the average is over 35% with two of them hitting over 50% in March, Finland and Poland.
Finland was the most unusual one since it was 39.5% in February and now 53.4% in March.

Has anyone else seen such a dramatic increase with their sites?

[goodroi]

I haven't seen a jump like that in one month but when there is a new browser upgrade I have seen faster increases. Of course the increase varies for each of my websites since each of them have different audiences.

[netmeg]

My personal site has something like 65% "not provided" - but it's visited mostly by people who are logged in to Google for one reason or another. So it's aggravating, but not surprising.

One of my B2B ecommerce clients is currently running about 35%, and that's a huge increase for them - but it happened slowly, over time.

[MonkFish]

Firefox and Chrome now force SSL search on the google homepages and search so people who use these browsers will not provide the keyword information. Try sorting not provided by browser. you will see an increase on ff and chrome near the end of last year.