Data Breach
A data breach is a security incident where confidential or protected information is accessed, exposed, or stolen without permission. This data often includes personal, financial, or login information.
How it happens
Data breaches usually occur due to weak security or human error. Attackers may break into systems or gain access through stolen credentials.
Once inside, they can copy, sell, or publish the data.
What data can be affected
A data breach may expose:
- names and email addresses
- passwords
- credit card details
- personal documents
The impact depends on the type of data involved.
Common causes of data breaches
Some frequent causes include:
phishing attacks
weak or reused passwords
- unpatched software
- insider mistakes or misuse
Both technical and human factors play a role.
Why data breaches are serious
Data breaches can lead to:
- identity theft
- financial losses
- loss of trust
- legal and reputational damage
For companies, the consequences can be severe.
Simple example
A data breach is like someone breaking into a locked filing cabinet and copying private documents.
Related terms
- What is Cybersecurity?
- What is Phishing?
- What is Ransomware?
Source
Information simplified from the Wikipedia article “Data breach”.