It is always our commitment to work to prevent cheating and stat padding as part of an ongoing process. After the problems brought to light recently we have been working with the Ranked Server Providers to bring the stat padding to an end as well as dealing with those who have been using the exploit to boost their scores. Since the problem was detected, we have reset over 700 accounts of players found to be padding and will continue to do so whilst we secure the ranking system from future attacks. Please report any servers or players you suspect of cheating and/or padding to EA Customer Support through the website at http://support.ea.com.
Source: Battlefield Portal