Why This Topic Landed in Japan
Anxiety about Japan's defenses had been building across recent days — a foreign hacker group's "Japan has some of the world's worst security" line, and leaks said to run through China. Against that backdrop, two things landed together: a report that several countries had jointly named the source of attacks, and the striking figure of an attack "every 13 seconds." According to Japan's National Police Agency and its national cyber unit, Japan joined an international advisory about companies supporting China-linked threat actors. The "every 13 seconds" number, however, is an average of observed attack attempts against each IP address on the darknet, not a rate at which every company or agency is actually breached; and the joint advisory describes intrusions that mix automated tools with manual work, and does not itself point to AI abuse. The multi-country advisory was itself a new step, separate from the earlier arrest of a ransomware figure and the data-leak stories that had kept cyber threats in the conversation.
Key Reaction Themes
- Calls to cut off the attack source (by far the most common) — Proposals to block overseas access, drop IPs from China, even cut undersea cables.
- Unease about AI's two edges — A sense that AI has automated the attacks, paired with "use AI for defense too."
- Interest in attribution — Guesses about who is behind it, from "the one not taking damage" to brazen .cn phishing domains.
- Doom and helplessness (a minority) — "Prologue to humanity's extinction," "the internet is ending."
What Japanese Netizens Are Saying
Seven-nation advisory on China state-backed cyber groups
Several countries, including the U.S., U.K., Australia and Canada, jointly named groups supporting China state-backed cyberattacks.
Sources: 2ch
Comments:
- "Give it a rest, Xi Jinping, lol."
- "South Korea's banks get hit even though it isn't being targeted — where does that leave it?"
- "The news said attacks suddenly jumped after a new version of a Chinese-made AI came out — is that true?"
- "They send phishing mail brazenly from .cn domains. Unbelievable."
- "On some ranking of cyberattack frequency Japan is around 7th or 8th in the world now; 1st was the U.S., 2nd Ukraine, I think."
- "Just cut the undersea cables."
- "The point is that it's multiple countries — they probably can't grasp that, lol."
- "Too late — the international response has already started moving."
- "Incidentally Japan has started moving on its own too; you can guess against what, right?"
- "There's too little upside to keeping them connected to the internet; America should start considering cutting them off."
- "The culprit is… maybe the one that isn't taking any damage?"
- "I want Takaichi to pile the pressure on China hard."
- "Couldn't we just physically cut the lines? That's doable, right?"
- "It's solved if every country blocks IPs from China."
"Every 13 seconds," with AI behind it
A report said Japanese firms and public bodies are hit by a cyberattack every 13 seconds, with AI abuse as a factor.
Sources: Kansai Television, 2ch
Comments:
- "This is the prologue to humanity's extinction."
- "With AI advancing, things get less convenient, not more."
- "Why not just use AI for defense?"
- "The financial institutions get hit and we're all left penniless."
- "Isn't it a good thing it's been proven full of holes?"
- "Lately even trivial sites are getting overloaded."
- "It's absurd how much electricity and water get burned on this AI-versus-AI fight."
- "They make it sound like the AI is doing it on its own — no way; humans are directing it."
- "My Number data has probably already been siphoned out too."
- "Why treat it as unavoidable just because it's AI? Punish leaking companies severely and they'll scramble to protect data — and stop hoarding unnecessary personal info in the first place."
- "So we get hit once in the time it takes to watch a single TV commercial?"
- "At this point it's basically handing over information once every 13 seconds."
- "If a megabank leaks in this climate it'll be a panic."
- "Who knew the internet would meet its end this easily."



