Data breach
A data breach is a security incident in which protected or sensitive data is accessed, disclosed, altered, acquired, or otherwise compromised without authorization.
Data-Driven Cybersecurity
A cybersecurity incident in which data, systems, or networks are compromised through unauthorized access, theft, or another form of compromise.
- How it is used
- Uses breach classification to prioritize response and frame containment, investigation, recovery, and organizational communication.
- How deep it goes
- Defines breach relative to events and incidents, then works through response decisions and an investigation rather than technical exploitation steps.
- Examples
- Uses a customer-data tabletop exercise and a financial institution’s documented exfiltration investigation.
- What you can do after
- Practice/perform it by rehearsing breach confirmation, containment, escalation, and communications in a tabletop exercise.
Effective Data Analysis
A data breach is an incident in which protected or sensitive data is accessed, disclosed, altered, lost, or acquired without authorization.
- How it is used
- Frames breach risk as a reason to protect participant privacy when collecting, storing, and analyzing sensitive information.
- How deep it goes
- Explains consent, anonymization, masking, access, sharing, retention, and deletion controls, but does not detail incident response.
- Examples
- Uses third-party capture, foster-youth records, anonymized IDs, masked fields, and restrictions on local downloads or email sharing.
- What you can do after
- Operate securely by applying consent, anonymization, masking, access, retention, and cross-functional review practices.
Grokking Web Application Security
A data breach is an incident in which unauthorized parties gain access to or obtain protected data.
- How it is used
- Frames database compromise as a security incident requiring assessment of exposed data and clear communication to affected users.
- How deep it goes
- Explains database theft, credential misuse, write-access abuse, disclosure consequences, and incident announcements without detailing technical containment.
- Examples
- Uses stolen social-media credentials, database downloads, injected JavaScript, malicious downloads, and forced password rotation.
- What you can do after
- Evaluate/understand what an attacker may have accessed and communicate user actions and recurrence-prevention steps.
Read how Grokking Web Application Security explains data breach →
Introduction to Generative AI, Second Edition
A data breach is a security incident in which unauthorized parties gain access to or disclose protected data.
- How it is used
- Frames unauthorized exposure as a practical risk when organizations deploy dialogue agents with sensitive information.
- How deep it goes
- Defines the incident and illustrates consequences through one breach, but stops short of technical investigation or remediation procedures.
- Examples
- Uses the March 2023 ChatGPT breach involving chat titles, names, partial card details, email addresses, and payment addresses.
- What you can do after
- Evaluate deployment choices by recognizing breach risks and the protective role of private or enterprise infrastructure.
Read how Introduction to Generative AI, Second Edition explains data breach →
Related concepts
- mean time to detectmeasured by · Mean time to detect is the average elapsed time between the occurrence of an incident or failure and its identification.
- emergencykind of · An emergency is an unexpected, urgent situation threatening a system’s operation, stability, safety, or objectives and requiring immediate action.
- securityaddressed by · The protection of systems, information, resources, and operations against unauthorized access, use, disclosure, alteration, disruption, or destruction.
- principle of least privilegeaddressed by · The principle of least privilege is a security principle that grants each user, process, or other subject only the access rights necessary for its authorized tasks.
- sensitive informationproduces · Sensitive information is information requiring protection because its unauthorized access, disclosure, alteration, or misuse could cause harm or violate obligations.
These guides are generated from the text of Manning books by Manning's knowledge graph and link to the sections they draw on. The full books are available on liveBook and at manning.com.



