[mythtv] Proposal for Zap2It labs

[Sam Varshavchik]

Justin Moore writes:

> 
>> > This would help Zap2It track down the ones leaking their listings, allow
>> > us TOS-abiding users to keep our listings, and generally keep everyone
>> > happy.  Obviously there are more details to work out, but this general
>> > approach could be feasible.
>> 
>> … until the abuser opens two accounts, and easily identifies, and 
>> eliminates, the trivial differences between the two sets of listings,
> 
> OK, let's say the abuser has two accounts, $a$ and $b$.  They download
> both set of listings.  They find $N$ instances in which the two accounts
> differ.  Now what?

Now you know how the listing are permuted, and how to undo it.

>                    Which one is the "valid" copy and which one is the
> tagged one?  Let's say they open a third account, $c$.  They download
> those listings.  Of the $N$ places in which $a$ and $b$ disagree, they
> find $X$ cases where $a$ and $c$ agree but $b$ doesn't, and $Y$ cases
> where $b$ and $c$ agree but not $a$.  Furthermore, there are $Z$ cases
> where $a$ and $b$ agree but $c$ doesn't.

All you have to do is keep the parts that are the same in all versions.

> evade detection.  I'm not a cryptographer myself, but I'm certain it's
> possible to design a system such that it's easy for Zap2It to make the
> changes, difficult for the "bad guy" to isolate those changes, and easy
> for Zap2It to link leaked listings back to opened accounts.

If you're so sure, why don't you design such a system, and make millions.


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