Oh, I am sorry, it seems I didn't answer your question completely.

According to pyramid stats, only 0.06962500 btc has been withdrawn for member #476, no withdrawals were made on the 16th for #476.

Keylogger installed on your machine wouldn't  make it easier to withdraw funds from bitcoinpyramid (since bitcoinpyramid doesn't deal with any passwords or manual withdrawals). But it could allow attacker to modify your profile at bitcointalk.

I agree with N.Olmos, you probably are looking a wrong membership account. If you believe something went wrong, please provide correct member id (or your withdrawal address) and id of suspicious transaction. The system is fully transparent so if something goes wrong, most likely we can easily figure it out. All withdrawals are logged here: http://bitcoinpyramid.com/withdrawals.


Why do you think that "someone withdrew .13 btc on the 16th." (how do you know that?).