New Attach on SHA-1
Until yesterday, the best-known attack for SHA-1 was considered to have a complexity of 2^63 which is considered to still be secure for most uses. However, if the claims prove valid, the complexity of SHA-1 can be reduced to 2^52 or 2048 times less secure.
That is something to follow, used SHA-1 twice recently.
http://www.linkgard.com/security_blog/new-attack-against-sha-1/
http://en.wikipedia.org/wiki/SHA-1
