LSMW Scenarios

We are doing a presentation on LSMW (what this is and how it's done) and need to explain the risks involved. In order to do this, I need to to create LSMW programs around the following scenarios:

1. the potential to cause data table issues while users are on the system when the dataload is executed

2. direct updates into the tables bypassing the transactions.

If someone can give me examples on the above scenarios, I would be really grateful.

And any other dangerous scenarios are appreciated as well.

Thanks in advance!