Cyber security expert explains how easily human mistakes.

Atlantic magazine editor-in-chief Jeffery Goldberg had been inadvertently added to a group chat that reportedly exposed him to classified military plans, including weapons packages and targets.

The incident, which is being played down by those involved, but described by others as a major breech of security, has raised many questions about the appropriateness of the technology being used. Professor Oli Buckley,  an expert in cyber security whose research has a strong focus on the human aspects of security, explains how even the most secure technology can’t protect against user error.