[Cryptography] Sony finding SHA1 collisions?

[Benjamin Kreuter]

This article seems to be saying that Sony has been using SHA1 collisions
to attack BitTorrent:

http://arstechnica.com/tech-policy/2014/12/sony-fights-spread-of-stolen-data-by-using-bad-seed-attack-on-torrents/?q=1

Does anyone know if that is what Sony is actually doing?  I cannot seem
to find more details after ~5 minutes of Googling.

-- Ben
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 836 bytes
Desc: This is a digitally signed message part
URL: <http://www.metzdowd.com/pipermail/cryptography/attachments/20141212/14c34ce6/attachment.sig>