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Breach Notification Clock

When must you notify after a breach?

Pick the jurisdictions you operate in and an incident time. This shows each regime's notification clock, who to notify, and a computed deadline where the clock is fixed. During a real incident, minutes matter — know the clocks before you're in one.

European UnionGDPR Art. 33/34
Nov 15, 2026, 11:10 PM

72 hours to the DPA; to individuals “without undue delay” if high risk

Notify: Supervisory authority (DPA); affected individuals if high risk

GDPR Articles 33 & 34

United States (public cos.)SEC Form 8-K Item 1.05
Nov 18, 2026, 11:10 PM

4 business days after determining the incident is material

Notify: SEC (public filing)

SEC Cybersecurity Disclosure Rules (2023), 8-K Item 1.05

Practise managing a breach

Not legal advice. These are simplified summaries of complex regulations with many conditions, thresholds, and exceptions. The clock trigger (e.g. “awareness” vs “materiality determination”) is often contested. Always confirm exact obligations with qualified legal counsel.

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Sample report · illustrative data

Sample result: breach notification deadlines

Example run with two regimes selected (European Union and United States public companies) and an invented trigger time of Tuesday 10 March 2026, 09:00 UTC.

Deadlines

RegimeNotifyClockComputed deadline
European Union, GDPR Art. 33/34Supervisory authority; affected individuals if high risk72 hours to the authority, from becoming aware of the personal-data breachFri 13 Mar 2026, 09:00 UTC
United States (public companies), SEC Form 8-K Item 1.05SEC (public filing)4 business days after determining the incident is materialMon 16 Mar 2026, 09:00 UTC

Reading the result

The clock start differs by regime: awareness of the breach for GDPR, the materiality determination for the SEC filing. Regimes without a fixed hour count show the rule in words only. These are simplified summaries, not legal advice.

Made-up example data. Your own run uses your inputs. Downloads of the full report need Pro.

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