Okay lets take a step back here....
Security sectors are unique for each region. A PAL Germany disk will have a different SS than a PAL Italian disk.
Security Sectors have nothing to do with being blacklisted.
MS can detect several things if they want..
A) That your firmware is not original.
That your disc is not original (Security Sectors have been relocated)
c) Future game disks can require a update or check.
They can detect these things when you are off of Live, set a flag, and ban you even if you reverse everything. (Possible but speculation at this point)
If you want to have no risk in getting banned from live do not use the hacks, period.