Data source
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Headline figures · selected period
Composition · top categories
Total breaches
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Last 12 complete months
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Highest month
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Top incident type
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Most affected industry
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Sector split
share of all
Alpha Breach Index · monthly volume
Since May 2018
The latest month’s figures are provisional: notifications are still being published.
Marked events: GDPR takes effect · Pandemic
Monthly total · year-over-year overlay
same calendar months · 2024 / 2025 / 2026 YTD
Year-over-year overlay
Each year’s months on one axis, so you can see whether this year is running above, below, or level with earlier years.
The latest month’s figures are provisional: notifications are still being published.
Breach calendar
Notified breaches per month, one row per year, with each year’s total.
The latest month’s figures are provisional: notifications are still being published.
Seasonality
The latest month’s figures are provisional: notifications are still being published.
Sector mix · sub-sector share
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12-month snapshot · by sub-sector
last 12 mo · scroll →
The latest month’s figures are provisional: notifications are still being published.
Of every 100 notified breaches
Each square is one in a hundred notified breaches in view.
Rounded so the squares total exactly 100.
Each breach is counted once, under the most widespread of its incident types.
In numbers
Top 10 hændelsestyper
Notified breaches per incident type, split by sector. A breach can involve several types, so the bars together add up to more than the number of breaches.
Public
Private
Unknown sector
From sector to incident type
Notified breaches by sector, to the ten most common incident types and the rest
Each breach is counted once, under the most widespread of its incident types.
Point at a flow or a name to highlight it, or use Tab and the arrow keys.
Industries follow Statistics Denmark’s industry classification DB25 (Danish Industry Code 2025). The letter beside each industry shows its DB25 section. Changes in an industry’s figures may partly reflect the change of classification.
Industry leaderboard
Last 12 complete months · change vs prior 12
| Industry | N | change |
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Breaches with an unknown industry are not ranked.
Top 10 brancher
Industries with most notified breaches
Breaches with an unknown industry are not ranked.
Ten largest industries, year by year
Breaches with an unknown industry are not ranked.
Follows the period, sector, and incident type filters, not the industry filter.
Every industry, month by month
Notified breaches per month, largest first; each name opens the industry’s profile
Each card on its own scale. The figure: notified breaches in the period. The change: the last 12 complete months against the 12 before.
Follows the period, sector, and incident type filters, not the industry filter.