Quartz reports: The information superhighway got diverted last week when a Ukrainian internet service provider hijacked routes used by data heading for websites in the United Kingdom, according to a company that monitors and optimizes internet performance. The action could be a mere glitch — or something more sinister in an era of geopolitical cyber conflicts.

The issue at hand is the way disparate computer networks merge into the internet. The networks announce to one another which internet users — more technically, which IP addresses — they serve so that data can be routed accordingly; a US internet service provider might tell the world it can give you access to the Library of Congress, while one in Germany would say that it can reach BMW’s main website.

Dyn, the company that noted the incident, keeps an eye on network traffic patterns. Doug Madory, the company’s director of internet analysis, spotted something strange: Vega, a Ukranian internet service provider, had announced it was serving numerous IP addresses in the United Kingdom. Advertising the wrong addresses is called “route hijacking,” and it is often a quickly-corrected mistake — for instance, an employee of an internet service provider makes a typo while typing into a router. In this case, the affected addresses included those operated by defense contractors Lockheed Martin and Thales, the UK Atomic Weapons Establishment, and the Royal Mail. [Continue reading…]