&quot;Crypto collision used to hijack Windows Update goes mainstream&quot;<p><a href="http:&#x2F;&#x2F;www.theregister.co.uk&#x2F;2014&#x2F;11&#x2F;05&#x2F;md5_hash_collision&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.theregister.co.uk&#x2F;2014&#x2F;11&#x2F;05&#x2F;md5_hash_collision&#x2F;</a>