Phone Interview. I just have several questions about your thinking about security and your technical skills. Nothing specific. No coding problems. The only problem I remember is how do you design testcases and what't the relationship between mathematics and computer science.

The process takes about 20 min. Talks about the position and the past projects. Then the recruiter asked some behavior questions. Then he asked some simple questions like what is the trouble you met in your past project and how do you solve it.