Scary... http://www.coinfox.info/news/persons/1733-kaspersky-lab-researcher-creates-virus-that-can-spread-through-the-blockchain
March 2015
Unless the exploit has been fixed, that doesn't change the fact that it is a security vulnerability.
They don't say this will break bitcoin, just that it can be a portal to install malware.
lol, no. nonoononono.