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BackWhat is Personally identifiable information (PII) in Cyber Security?
Personally identifiable information (PII) in cyber security is any information that can identify, distinguish, or trace an individual, either on its own or when combined with other data. In cybersecurity, protecting PII is a top priority because cybercriminals frequently target it for identity theft, financial fraud, account takeover, and social engineering attacks.
Organizations collect PII for various purposes, including customer onboarding, employee management, financial transactions, healthcare services, and regulatory compliance. Since this information often resides across endpoints, applications, databases, and cloud services, securing it requires a combination of technical controls, security policies, and user awareness.
A breach involving PII can result in financial losses, reputational damage, regulatory penalties, and loss of customer trust.
Types of PII
PII can be classified into direct identifiers and indirect identifiers.
| PII category | Examples |
|---|---|
| Direct identifiers | Full name, passport number, driver’s license number, Social Security number, national ID number |
| Contact information | Email address, phone number, home address |
| Financial information | Bank account number, payment card information, tax identification number |
| Online identifiers | IP address, device identifiers, account usernames |
| Employment information | Employee ID, payroll details, work email |
| Biometric information | Fingerprints, facial recognition data, iris scans |
Some types of PII, such as biometric and financial information, require stronger protection because of their potential impact if compromised.
Why protecting PII matters
PII is valuable because it can be used to impersonate individuals, access financial accounts, or launch targeted attacks. Organizations that fail to protect PII may face operational disruption, legal action, and compliance violations.
Protecting PII helps organizations:
- Reduce the risk of identity theft and fraud.
- Meet privacy and data protection requirements.
- Protect customer and employee information.
- Minimize the impact of data breaches.
- Maintain customer confidence.
- Strengthen overall cybersecurity.
A comprehensive security strategy should protect PII throughout its collection, storage, processing, transmission, and disposal.
Best practices for protecting PII
Organizations should implement multiple layers of security to reduce the risk of unauthorized access.
| Best practice | Benefit |
|---|---|
| Encrypt sensitive data | Protects information during storage and transmission |
| Enforce least-privilege access | Limits access to authorized users |
| Implement multi-factor authentication | Reduces the risk of account compromise |
| Apply security patches regularly | Closes known vulnerabilities |
| Monitor endpoint activity | Detects suspicious behavior early |
| Classify sensitive data | Improves data handling and protection |
| Train employees | Reduces phishing and social engineering risks |
Combining these controls helps organizations protect PII across both on-premises and cloud environments.
How Hexnode helps protect PII
Hexnode UEM helps organizations secure the endpoints that access, process, or store personally identifiable information. Administrators can enforce device security policies, manage operating system updates, configure encryption on supported platforms, deploy approved applications, and monitor compliance from a centralized management console.
Hexnode UEM also supports device restrictions, application management, inventory reporting, and remote security actions such as device lock and enterprise wipe. These capabilities help reduce the risk of PII exposure caused by compromised devices, unauthorized applications, or non-compliant endpoints.
FAQs
Organizations should contain the incident, investigate the cause, assess the affected data, notify impacted individuals and regulators where required, and implement corrective measures to prevent similar incidents.
Yes. Encryption reduces the risk of unauthorized access, but encrypted PII remains sensitive information and should continue to be protected with appropriate security controls and access restrictions.