EAD等待期间找工作

Hi,everyone! I am currently holding a H4 visa and waiting for my EAD based on the pending I-485. During this waiting period, I start to do some job research. Today one staffing company called me and scheduled a time to interview me. They also required me to fill out some kind of application form including my social security number, my past employement history,etc. At this moment,I am not sure if it is safe to disclose these information to them. Thank you so much for any advice.