The real issues is the weak PK values here and education on how to create secure keys.
I tested lot's of the tools that are available out there even going as far as to parse the entire blockchain into MySQL table while running ABE and BF and a few other scanners I have there are still 100's of un-secure wallets out there waiting to be picked up by the sweepers (just for the record I don't sweep funds and never will.)

But it's quite a concern that many people seem to have funds laying out there which any competent person with python and a word list could find.
I also ran some checking on the old style electrum seeds with a "modified" word list and have had some wallets return with funds highest was around 0.15 BTC.

I am unable to post the results as the wallets seems to be active.