Blu-Ray AND HD-DVD broken

Some time ago a guy posted the first crack to these new formats and now another improved crack have been made:

AACS took years to develop, and it has been broken in weeks. The developers spent billions, the hackers spent pennies.

For DRM to work, it has to be airtight. There can't be a single mistake. It's like a balloon that pops with the first prick. That means that every single product from every single vendor has to perfectly hide their keys, perfectly implement their code. There can't be a single way to get into the guts of the code to retrieve the cleartext or the keys while it's playing back. All attackers need is a single mistake that they can use to compromise the system.

There is a good quote (taken from schneier.com that I think fits quite well:

But there's an old saying inside the NSA: "Attacks always get better; they never get worse."

That quote is about breaking cryptography, but that is a big part of any DRM system too.

Arstechnica have written about this crack as well.