Welcome to your interview.
The question is on your right: Anomaly Detection in Access Logs. Take a moment with it first.
Talk your thinking through with me if you like - when you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes). Discussion and graded submissions share your five interviewer interactions, so spend them well.
Given a stream of document access logs, write an efficient algorithm to detect anomalous access patterns, like a single user downloading an unusually high volume of files in a short window, at NetDocuments.