QUOTE(Hurleyman217 @ Nov 21 2011, 02:20 AM)

Thanks for the response filletofish.
I have been online in the last few days, but I have played only a stock disc of AC Brotherhood for the last week or two. Given my circumstance, do you think I am safe to play my backups offline?
Sean
If you have been online in the past 2-3 days you will definately have the new dae.bin protection active on your Xbox 360. This means...
1. AP2.5 games will not boot.
2. Trying to play an AP2.5 game and it not booting will set a flag on your NAND which will then be uploaded when you next connect to Xbox Live.
3. This means you will then be flagged for a ban - IF - banning based on AP2.5 fails is enacted. (It hasn't so far as far as anyone knows, except I think at the beginning of august where quite a large number of people were banned only for the bans to be revoked as it was deemed that the bans were unsafe and that some people who didn't have modded consoles were banned).
However, this is a few months down the line and it is likely that the detection\banning will not have those mistakes in it now.
Basically...
Your console now will not boot AP2.5 games, as long as you do NOT
attempt to play ANY AP2.5 backup until you flash the new LT3.0 when it comes out, you will be safe - even if connected to live etc.
If you do\have played one and got the message saying the game can't start etc. Then you it doesn't matter what you do, you are flagged.
You cannot play ANY AP2.5 games online OR offline now that you have the new dae.bin. ...I don't think Assasins Creed 1\2 has AP2.5 but brotherhood\revelations definately does....EDIT - just seen you said stock, as long as it's not a backup you can play ANY game. All this info only pertains to backups, real games will work as they should and are unaffected by any of this recent news.