Applied through a recruiter. Submitted information sheet outlining experience, including specific to security and coding. Had a phone interview, approximately 45 minutes long. Combination of technical questions and going over resume.

Phone Call - 30 min ; then multiple interviewers onsite. Most interviewers were very nice. It was very in-depth probing. There's no way to 'study' for this. The HR team was not prepared though. They were nice enough. I knew I answered a question incorrectly on the 3rd interview. That interview was cut short and I was told I was done for the day. Typically it's a full day interview...Oh well.