The Cloudflare bug has now been fixed, but it caused sensitive data like passwords to be leaked during a very small percentage of HTTP requests. The peak period of leakage is thought to have occurred between Feb 13 and Feb 18 when about 0.00003% of HTTP requests were affected.
So that bug is faulty SSL connection, then in theory when I wasn't using any service at that time of the main leakage from Feb 13 to 18 then my data couldn't be sniffed?
but it is strange that i have not yet received any email from any of the excahnges that i use and others are saying they have received them!
Some services are neglected this issue and 'forgot' to send emails with warning.
I use blockchain.info wallet and I never received any warning about this CloudFlare security breach from them.