0 60 91 05 v 1 2 5 Se p 20 06 The Mock LISA Data Challenges : An Overview The Mock LISA Data Challenge Task Force :

The LISA International Science Team Working Group on Data An lysis (LIST-WG1B) is sponsoring several rounds of mock data challenges, with t he purpose of fostering the development of LISA data analysis capabilities, and of demonstrating te chnical readiness for the maximum science exploitation of the LISA data. The first round of chal lenge data sets were released at the Sixth LISA Symposium. We briefly describe the objectives , structure, and time-line of this programme.