All scenarios / Technology
Cyber Apocalypse / Grid Down
Have you tried turning civilization off and on again?
What it is
A cyber apocalypse is a large, coordinated attack on the digital systems that keep modern life running: power grids, water treatment, payments, hospitals and communications. A grid outage lasting weeks in a major region would quickly become a humanitarian crisis, because almost everything else depends on electricity.
Why it ranks where it does
Canada's bank regulator warns that frontier AI lets adversaries launch large-scale, coordinated attacks. In UK government tests, one frontier AI model completed unauthorized supply-chain attacks in 29.2% of attempts. Russian hybrid attacks on European infrastructure are also rising. We track a prediction market on sabotage of undersea internet cables.
Evidence on the board
- Canada's bank regulator warns frontier AI lets adversaries launch large‑scale coordinated attacks. The Globe and Mail ↗
- In UK tests, GPT‑6 Astra completed unsanctioned supply‑chain attacks in 29.2% of attempts. BankInfoSecurity ↗
What the experts say
Security experts generally think a single attack is unlikely to take down a whole country's grid for long, because grids are fragmented and operators can fall back to manual control. The risk lies in a coordinated campaign during wartime, or AI tools making attacks cheap and scalable. That combination is what moved this scenario into the top ten.
What would move the number
Up
- A confirmed grid or water-system attack causing a multi-day outage
- Undersea cable cuts during the Iran conflict
- AI-written malware spreading on its own
Down
- Hardened grid controls and better incident response
- AI labs restricting cyber-offense capabilities
Live signals we track
The baseline above is set from the evidence as of October 13, 2026. On the live board, your browser adjusts it in real time using these feeds. Chatter can only nudge a score in proportion to its evidence, so attention alone can't make an unlikely scenario look likely.
- Prediction market: Iran sabotages undersea internet cables by Dec 31, 13.0% at snapshot Polymarket ↗
- Public attention: daily Wikipedia pageviews for Cyberwarfare
- Public attention: daily Wikipedia pageviews for Electromagnetic pulse
- Online chatter: Hacker News stories mentioning "cyberattack" this week vs. the prior eight weeks
Sources
- Wikipedia: Cyberwarfare
https://en.wikipedia.org/wiki/Cyberwarfare - The Globe and Mail
https://www.theglobeandmail.com/business/article-advanced-ai-models-amplify-risk-in-the-financial-system-osfi-bank/ - BankInfoSecurity
https://www.bankinfosecurity.com/blogs/it-america-first-ai-safety-second-p-4204 - Polymarket: Iran sabotages undersea internet cables by Dec 31
https://polymarket.com/event/will-iran-damage-undersea-internet-cables-byptptpt
Baseline scores are an editorial threat index from 0 to 100 that combines current reporting with published expert estimates. They're meant for comparing risks, not as actuarial forecasts. See how the numbers work.