Data Breach Crisis Communication: Must be written with transparency and empathy, complying with the KVKK 72-hour notification period. Notification steps: 1) Internal coordination (IT, legal, PR, HR): incident response team meeting (hour 1), 2) Verify scope of data (how many customers, what type of data), 3) Prepare notification text (use a template), 4) Customer segmentation (affected vs. unaffected: write only to the affected group, providing confidential info), 5) Chairman/CEO signature (to show authority), 6) Channel selection (email is safest, SMS for additional notification). Template structure: 1) Statement of fact (attack occurred, accept responsibility), 2) Explanation of affected data (name, email, etc. — specificity increases trust), 3) Immediate steps (password change, credit monitoring check), 4) Measures the company will take (investigation, remediation), 5) Communication channel (support email, hotline). Timing: Notify customers within 72 hours (KVKK), simultaneously or later (depending on legal advice). PR strategy: proactive (notify customers before public news of the attack), transparent (all info open), empathetic (help the customer). HR coordination: internal employee communication (expect questions from reporters, social media).