What is Data Retention and Why Does it Matter?

Every business creates and stores data. Emails, financial records, customer information, contracts, employee files, security logs and so on and so fourth accumulate every single day. But how long should you keep that data? When should it be deleted? And what happens if you keep that data for too long, or not long enough?

The answer lies in your data retention policy.

What is Data Retention?

Data retention refers to the practice or storing information for a defined period of time before it is archived or securely deleted. A data retention policy establishes what information your organization keeps, how long it is retained, where it is stored, and how it is disposed of when it is no longer needed.

Data retention is essentially a filing system with rules. Not every document needs to be kept forever, but some records must be retained for legal, operational, or compliance reasons.

Common examples include:

• Financial records

• Tax documents

• Employee records

• Customer information

• Email communications

• Security and audit logs

• Contracts and agreements

• Backup data

Why Data Retention Matters

Many organizations either keep everything forever or delete information without a clear strategy. Both approaches create unnecessary risk.

1. Helps Meet Compliance Requirements

Many industries are subject to regulations that dictate how long certain records must be maintained.

Examples include:

• Healthcare organizations subject to HIPAA

• Financial firms governed by SEC or FINRA regulations

• Businesses processing payment cards under PCI DSS

• Organizations handling personal information under state privacy laws

Failure to retain required records can result in fines, legal challenges, and compliance violations.

2. Reduces Cybersecurity Risk

The more data you store, the more data cybercriminals can potentially access during a breach.

Old customer records, outdated employee information, and legacy files often remain stored long after they serve a business purpose. If attackers gain access to your systems, every unnecessary file becomes an additional risk.

A strong retention policy helps reduce your attack surface by by eliminating data that no longer needs to exist.

3. Improves Storage Efficiency

Cloud storage may seem inexpensive, but costs add up over time. Organizations often pay to store years of duplicate files, obsolete backups, and outdated records.

Proper retention policies:

• Reduce storage expenses

• Improve system performance

• Simplify backup management

• Make information easier to locate

4. Supports Legal and Audit Requests

When legal disputes, audits, or investigations arise, organizations need quick access to relevant records.

Without clear retention practices, businesses may struggle to locate documentation or prove compliance. In some cases, missing records can create legal liability.

Having organized retention schedules ensures critical information is available when needed.

5. Strengthens Business Continuity

Data retention and backup strategies go hand-in-hand.

Businesses need access to critical historical data to recover from ransomware attacks, hardware failure, accidental deletions, or natural disasters. Knowing what data must be retained helps ensure backup systems are protecting the information that matters most.

Common Data Retention Mistakes

1. Keeping everything forever

Many businesses assume its safer to just save everything indefinitely. In reality, this often creates unnecessary security, compliance, and storage challenges.

2. Deleting data too soon

Removing records before required retention periods expire can lead to compliance violations and legal complications.

3. No written policy

Without documented guidelines, employees make inconsistent decisions about what to keep and what to delete.

4. Ignoring email retention

Email often contains sensitive business information, contracts, financial discussions, and customer data. Yet email retention is frequently overlooked.

5. Forgetting about backups

Deleting data from production systems does not automatically remove it from backup systems. Retention policies should account for both live data and backups.

What should a data retention policy include?

A strong policy should define:

• Types of data being retained

• Required retention periods

• Storage locations

• Access controls

• Archiving procedures

• Secure deletion methods

• Compliance requirements

• Roles and responsibilities

The policy should also be reviewed regularly as regulations, technologies, and business needs evolve.

How Long Should You Keep Data

There is no universal retention period. The appropriate timeframe depends on the types of data, industry regulations, legal requirements, and business needs.

Examples may include:

• Tax records: Often 7 years or longer

• Employee records: Varies by state and federal regulations

• Security logs: Frequently 1-3 years depending on the compliance framework

• Customer records: Based on contractual, regulatory, and operational needs

Organizations should consult legal, compliance, and IT professionals when developing retention schedules.

Final Thoughts:

Data is one of your organization's most valuable assets, but keeping data without a plan can create serious risk.

An effective data retention policy helps businesses stay compliant, strengthen cybersecurity, reduce storage costs, and improve operational efficiency, and ensure critical data is available when its needed.

If your organization doesn't have a documented data retention policy, now is the time to create one. The right strategy can protect your business while helping to eliminate unnecessary risk.