ruined DVD

[motrucker]

Can a DVD reader (NOT a writer) ruin, or write to a DVD?
I have scoured the web for an answer, and all I can find is "nothing is impossible" or the standard " you must have stuck your greasy finger on it".
I didn't touch it (no prints or smears), but a commercial program DVD can no longer be read by any drive. What else could have ruined it?

[motrucker]

Of course a DVD that has been written to can appended or added to, as a CD can. I have more than a few examples. I was just wondering if a reader could in way shape of form, alter the DVD. Here too, I am well aware that they not supposed to be able to, but.....

[motrucker]

Thanks you all, but it isn't one of the usual "problems". There are no labels used, and the DVD still looks brand new. This didn't just happen once, but keeps happening to one specific DVD.
I suspect something is being reprogrammed in the computer/DVD by some one who has invaded my systems here.

[motrucker]

Well gang, I just routed out a piece of software (commercially available no less) that is made to modify an original pressing DVD of Windows Vista or 7 that allows disabling features, and adding upgrades (such as service packs, etc.). This software allows you to make a new DVD with the changes, OR write the changes to the original Microsoft Windows DVD.
If this can be accomplished on Windows, I am sure it can be done on other OSes.

[motrucker]

...

Personally, I'd think that even more unlikely than a non-physically-tampered-with DVD reader accidentally "writing" something on a DVD.  And I'd rate the odds of a DVD reader altering a DVD in a way that doesn't involve physical scratches, cracks, or warping, at about the same odds as winning the lottery jackpot.

Look for the simple explanations.  They're usually right.  The problem is sometimes they're so obvious they're hard to see.

If so, it would not keep happening to the same DVD. It looks like I have found the answers though.

[motrucker]

When my lawyer gives me a green light, I'll pass along along more info. Right now we are trying to nail a "hacker" who has invaded our home and work networks.
I was at a loss when I posted this thread, but have since answered my own question with much digging. I am amazed at some of the new technology out there.