Found a data leak — how many hours do I have to report to KVKK? Do I notify my customers at the same time?

72 hours mandatory to report to KVKK. how to notify customers depends: if credit cards leaked immediately; if name+email leaked, ask for caution. fines are huge man if you report late its millions...

KVKK Article 49: mandatory personal data breach notification, 72-hour deadline. Risk assessment: data type (sensitivity), encryption status, attack vector. If encrypted/tokenized: low risk, individual notification may not be required. If plain PII + payment data: high risk, mandatory notification. Documentation: notification date, method, recipients, KVKK reference. KVKK forms: breach notification form (VKK website), content template. Penalties: Article 18 (administrative fines), non-compliance 3 million - 50 million TL.

notify KVKK within 72 hours, don't be late. if customer data like credit card info leaked definitely report it; if just name/email, assess the risk right now. the text must be formal send it via registered mail, specify the date. fines are brutal, millions...

KVKK Data Breach Notification: 1) Confirm the breach (verify it actually happened), 2) Assess the risk (PII type, encryption status attacker access), 3) Inform the data controller (within 72 hours), 4) Inform the data subjects (if high risk), 5) Document (timestamps recipients, response). Risk assessment: PII only (medium), PII + payment (high), encrypted PII (low). Notification template (Ministry of Interior template): nature of the breach, date, scope, corrective measures. Keep records of all communications (proof of notification).

We've heard this a lot, but it never happened like that for us. Processes without records never improve, because you don't know what to fix.

If I were you, I'd go this route.

Exactly, and not many people know this... tbh everything goes well for the first three months; problems arise in the fourth.

Of course it varies if your situation is different.

I'd appreciate it if you shared the outcome.

Same here.

Just a heads-up. Everyone rushing into kvkk data breach notification deadline gets stuck at the same point.

Proven by experience.

Let me summarize the topic, since several different answers were given. If the notification path is long, notifications don't arrive; missing notifications mean delayed incident detection.

Of course, it varies if your situation is different.

I'm a small business, let me explain from my side. Trying to do this alone is the most expensive way.

The biggest time-waster for us was not knowing who had the final say. Hope this helps.

Yes, that's exactly how it is with kvkk data breach notification deadline. Just because everyone does it doesn't mean it's right.

When we decide without measuring we always end up in the same place. Good luck with that.

I'll try it.

I agree. like your time to detect an issue directly determines its cost.

Hope this helps.

Exactly like that. When we decide without measuring, we always end up in the same place.

If I were you, I'd go this route.

Correct. Your time to detect an issue directly determines its cost.

That's all, sorry if I went on too long.

This thread is archived.

There's also a measurement aspect to this. People defend habits, not processes. Resistance comes from there.