Imperva interview questions

I really hope they know what they are doing, hope they know their criteria...... If you see a job opens for more than a year, run mate! They interview you just want to fail you with unreasonable feedbacks, thats it (I went through the internal hiring process so i got feedback on failed reasons compared to external interviewers who would just get something like "sorry you are not selected".... and it's totally nonsense, since im an internal interviewer, i would suggest recording all interview sessions in the future and send it out to other hiring members with the feedbacks in the compnay and see what they gonna say.....) Hint: if you got interviewed by someone called Siva, good luck mate, this dude is rude and weird.