KentuckyFC writes "Many countries censor internet traffic using techniques such as blocking IP addresses, filtering traffic with certain URLs in the data packets and prefix hijacking. Others allow wiretapping of international traffic with few if any legal safeguards. There are growing fears that these practices could trigger a major international incident should international traffic routed through these countries fall victim, whether deliberately or by accident (witness the prefix hijacking of YouTube in Pakistan last year). So how to avoid these places? A group of computer scientists investigating this problem say it turns out to be surprisingly difficult to determine which countries traffic might pass through. But their initial assessment indicates that the countries with the most pervasive censorship policies — China, Iran, Pakistan, Saudi Arabia — pose a minimal threat because so little international traffic passes their way. The researchers instead point the finger at western countries that have active censorship policies and carry large amounts of international traffic. They highlight the roles of the two biggest carriers: Great Britain, which actively censors internet traffic, and the US, which allows warrantless wiretapping of international traffic (abstract)."