Daily cyber threat index

DefenceLevel 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 →Follow the Index on LinkedIn →

Current levelDEFCON 2Severe riskNov 4, 2026 · 22:08 UTC

Days at DEFCON 1–29 of 306 in the previous 30 daysLast 30 days

Last alertNovember 4DEFCON 2 · todayDEFCON 1–2

Exploited vulnerabilities34CISA KEV catalogueLast 30 days

DEFCON level day by day

The level set each day with the briefing.

Days per DEFCON level

Vulnerabilities selected

New confirmed exploited vulnerabilities

Recent vulnerabilities that CISA confirms as exploited, month by month over the last 5 years.

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 →

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

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