Definition of handgrabber
A "handgrabber" is a software program that "takes" the hands played in an online poker room, that is, creates them and stores them on your computer. A handgrabber must be distinguished from a tracker. One of the many functions of a tracker is to take the hands played in a poker room and convert them into text files. The tracker will take hands while you are at the table playing, which is perfectly legal. On the other hand, a handgrabber will take all hands at any table you assign to it, even if you are not at the table. This practice is illegal in all rooms.
What is the purpose of the handgrabbing?
The purpose of taking hands played on a site is to build a database. And the more hands you have in your database, the more representative it will be of a player's style. Let's say a player starts out in a new poker room. He doesn't know the players and the players don't know him. If he uses a handgrabber, he will open say 12 tables of his limit, run his handgrabber 24 hours a day for a week and then analyze his opponents' results in detail. He will then have an advantage over them since he will know them while they will have no idea of his style. Although this technique is very profitable in the long term, it is forbidden everywhere. If you are caught doing handgrabbing, you will face serious consequences.