# DefenceLevel Index

Daily cyber threat index

The DEFCON level of each day, calculated from hundreds of official and independent sources.\
Public data, free to cite; vulnerability details are in the subscribers' briefing.

[Methodology and validation →](https://defencelevel.com/index/methodology)[Follow the Index on LinkedIn →](https://www.linkedin.com/company/defencelevel/)

- **Current level**: DEFCON 2 · Severe risk (Nov 4, 2026 · 23:07 UTC)
- **Days at DEFCON 1–2** (Last 30 days): 9 of 30 · 6 in the previous 30 days
- **Last alert** (DEFCON 1–2): November 4 · DEFCON 2 · today
- **Exploited vulnerabilities** (Last 30 days): 34 · CISA KEV catalogue

### Last 30 days

| Day (UTC) | DEFCON | Level | Vulnerabilities selected |
| --- | --- | --- | --- |
| 2026-11-04 | 2 | Severe risk | 12 |
| 2026-11-03 | 2 | Severe risk | 11 |
| 2026-11-02 | 3 | Substantial risk | 9 |
| 2026-11-01 | 3 | Substantial risk | 15 |
| 2026-10-31 | 2 | Severe risk | 15 |
| 2026-10-30 | 2 | Severe risk | 15 |
| 2026-10-29 | 3 | Substantial risk | 12 |
| 2026-10-28 | 3 | Substantial risk | 10 |
| 2026-10-27 | 3 | Substantial risk | 10 |
| 2026-10-26 | 4 | Moderate risk | 6 |
| 2026-10-25 | 3 | Substantial risk | 11 |
| 2026-10-24 | 3 | Substantial risk | 10 |
| 2026-10-23 | 2 | Severe risk | 10 |
| 2026-10-22 | 3 | Substantial risk | 12 |
| 2026-10-21 | 3 | Substantial risk | 13 |
| 2026-10-20 | 3 | Substantial risk | 8 |
| 2026-10-19 | 3 | Substantial risk | 9 |
| 2026-10-18 | 3 | Substantial risk | 4 |
| 2026-10-17 | 3 | Substantial risk | 10 |
| 2026-10-16 | 2 | Severe risk | 10 |
| 2026-10-15 | 2 | Severe risk | 12 |
| 2026-10-14 | 2 | Severe risk | 43 |
| 2026-10-13 | 3 | Substantial risk | 12 |
| 2026-10-12 | 3 | Substantial risk | 8 |
| 2026-10-11 | 3 | Substantial risk | 4 |
| 2026-10-10 | 2 | Severe risk | 13 |
| 2026-10-09 | 3 | Substantial risk | 13 |
| 2026-10-08 | 3 | Substantial risk | 13 |
| 2026-10-07 | 3 | Substantial risk | 11 |
| 2026-10-06 | 3 | Substantial risk | 10 |

## How the Index is calculated

### Sources

Agencies and CERTs, vendors, research labs, exploit archives and technical communities.

### Level of the day

Severity, real-world exploitation, reach, official confirmation. The day takes the daily briefing level.

### Updates

The current level is recalculated every 30 minutes. The day's level, set with the briefing, never changes.

Exploitation data: CISA KEV catalogue, VulnCheck KEV and ENISA EUVD.

**A public, verifiable method** Sources, calculation rules, level thresholds and how the results were checked against the CISA KEV catalogue: all documented, with the version and date of every change.

[Read the methodology →](https://defencelevel.com/index/methodology)

## Use the Index data

### Cite this data

Ready-to-copy text for articles, reports and presentations.

DefenceLevel Index, November 4, 2026: DEFCON 2, Severe risk. https://defencelevel.com/index

### Download the data

Daily level and figures, free to reuse with attribution.

CSV file · last 12 months\
Licence CC BY 4.0\
Source: DefenceLevel Index (defencelevel.com) [Download](https://defencelevel.com/api/trend?days=365&format=csv)

[Embed the Index on your site: badge and open data →](https://defencelevel.com/index/api)

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Web page: https://defencelevel.com/index

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