On the Noveria planet, go to the hotel bar, and look for a Turian named Lorik 
Qui'in. Accept his quest to steal the data from his office. Once you get the 
data, the receptionist will ask you to get Qui'in to testify. Tell her you will 
do it, and then talk to Qui'in. Tell Qui'in that he should testify (top left 
option). When he refuses, select the Charm option (top left) for Paragon points 
or the Intimidate (bottom left) for Renegade points, and end the conversation. 
Talk to him again, and ask about the Matriarch. When he gets done talking about 
her, select the "Other questions" option (bottom right). You should now have the 
option to ask him to testify again (top left). He will refuse, and you will be 
able to use the Charm or Intimidate option again to gain another 24 Paragon or 
Renegade points. Repeat this process as many times as desired. You can also 
easily get the "Paragon" and "Renegade" achievements with the glitch.