A data breach is a security incident where sensitive information, such as customer records, credentials or financial details, is accessed, copied or exposed without authorization, whether through attack, error or insider misuse.
Why it matters
Breaches cause financial loss, regulatory penalties and lost trust, and leaked credentials fuel further attacks like credential stuffing. Laws such as GDPR require notifying regulators, and sometimes affected individuals, within set timeframes. Prevention combines patching, access control, encryption and monitoring, backed by an incident response plan.
Example
A misconfigured cloud storage bucket is left public, exposing a customer export file. No hacking was needed, yet it is a breach. Users should change reused passwords and watch for phishing that uses the leaked details.
Common mistakes
- Assuming breaches only come from sophisticated hackers. Misconfiguration and mistakes are common.
- Delaying notification while investigating beyond legal deadlines.
- Keeping data you no longer need, which increases what can leak.
Related
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यह पेज सामान्य जानकारी है, जिसे हमारी संपादकीय टीम ने लिखा है और दस्तावेज़ीकरण बदलने पर अपडेट किया जाता है। सर्वर और प्रदाता अलग-अलग होते हैं, इसलिए बदलाव पहले सुरक्षित तरीके से जाँचें। देखें: संपादकीय नीति और अस्वीकरण.