Japanese police ask ISPs to start blocking Tor
According to The Mainichi, the National Police Agency (NPA, a bit like the Japanese FBI) …
Context & Ripple Effects
This request is the latest step in a decade-long pattern of Japanese authorities enlisting ISPs as an enforcement layer. It follows the music industry's push to get ISPs to filter P2P traffic and block The Pirate Bay in late 2007, and the agreement by Japanese ISPs to ban persistent pirates from the internet struck in March 2008 — both cases where network operators took on policing duties without waiting for legislation.
What changes with the National Police Agency's approach is the target class: not infringing content but an anonymity tool itself. Per The Mainichi, the NPA wants providers to begin blocking Tor traffic outright, and the story travelled unusually widely on pickup — BBC, The Register, ZDNet, SlashGear and others all carried it within a day.
First-order effects
- Tor users on Japanese consumer ISPs face losing access through their primary connection, since entry nodes would be unreachable at the network level — degrading anonymity for journalists, dissidents and ordinary privacy-conscious users alongside any criminal targets.
- ISPs are handed a new operational burden: identifying and filtering Tor traffic, which is technically nontrivial because it is designed to look like ordinary encrypted traffic.
Second-order effects
- Demand shifts toward substitute anonymity tools — VPNs, proxies and alternative overlay networks — meaning a block on Tor pushes determined users to methods that are harder for police to enumerate than a public relay list.
- Other governments and law-enforcement bodies gain a reference case for asking, rather than ordering, ISPs to block anonymity infrastructure; the voluntary-request model lowers the legal bar compared with prior copyright-driven filtering fights.
Third-order effects
- If the pattern holds, the line drawn in the 2007–2008 piracy filtering era — ISPs as content police — extends into infrastructure policing, where the target is not what flows over the network but the ability to be unidentifiable on it at all.
- A structural split opens between jurisdictions that treat anonymous networking as a protected capability and those that treat it as presumptively suspect, fragmenting how global services like Tor deploy relays and exit nodes.
The trend: Network-level blocking is migrating from copyright enforcement toward security and anonymity targets, with police agencies preferring informal ISP cooperation over formal regulation.