The Time Travel Exploit was first deployed in June 2011 by that genius kid ArtForz.

It's been well covered here in the forums. Most coins including Litecoin are "immunized" against the original, I've simply mutated it where it will work on scrypt chains at low net hash rate,i.e. less than 100 MHS. This was the first successful deployment of it since 2011 and in this form. One of the major requirements for it to work is really fast target time.

Nothing special, but with a little tweaking, it might be  




~BCX~