Elio is examining log files for authentication activities and notes that one of his users has signed in from a device located at his company's primary office in Chicago. Less than an hour later, the same user is noted as logging in from an IP address that geo-IP tools identify as originating from Australia. What kind of problem should he classify this as?

This sort of potential security problem is typically categorized as an "impossible travel time" or "risky login" issue. Elio would not anticipate the user to have traveled between two locations within an hour, as it is not feasible to do so. As a result, he must contact the user to inquire whether they used a VPN or if their account has been compromised. While it could be a problem with the company's geo-IP system, Elio must treat it as a security risk until he can confirm otherwise, and a breach is more probable in most cases. This problem would not be caused by an incorrectly configured IP address.