While there is no published sha1 collision as of now, we do have a freestart collision: https://sites.google.com/site/itstheshappening/ https://sites.google.com

While there is no published sha1 collision as of now, we do have a freestart collision: https://sites.google.com/site/itstheshappening/ https://sites.google.com/site/itstheshappening/ (Linked in the article as well). The issue being that sha1 collisions are so close that they are in the price range of criminal syndicates and nation states. Its better to deprecate sha1 before that happens.