--- title: "Understanding WORM backup: Ensuring compliance and security" description: In the world of data protection and compliance, WORM (write once, read many) backup technology plays a crucial role. This approach ensures that once data is written to a storage medium, it cannot be altered or deleted for a specified period. Understanding WORM backup is essential for organizations to ensure data integrity and compliance with regulatory standards. canonical_url: https://www.acronis.com/en/blog/posts/understanding-worm-backup-ensuring-compliance-and-security/ locale: en last_updated: 2026-10-27 --- [Acronis Blog](https://www.acronis.com/en/blog/) # Understanding WORM backup: Ensuring compliance and security In the world of data protection and compliance, WORM (write once, read many) backup technology plays a crucial role. This approach ensures that once data is written to a storage medium, it cannot be altered or deleted for a specified period. Understanding WORM backup is essential for organizations to ensure data integrity and compliance with regulatory standards. [Try Now](https://www.acronis.com/en/products/cloud/trial/) [![Image 2: Acronis Editorial Team](https://staticfiles.acronis.com/images/content/d85707ae91461544212d39836dc32b42.png)](https://www.acronis.com/en/blog/authors/acronis/ "Acronis Editorial Team") [Acronis Editorial Team](https://www.acronis.com/en/blog/authors/acronis/) 2 min read Last updated 07 November 2024 ## What is WORM backup? In the world of data protection and compliance, WORM (write once, read many) backup technology plays a crucial role. WORM backup technology allows data to be written to a storage medium once, and after this initial writing, the data cannot be altered or deleted for a predefined period. Understanding WORM backup is essential for organizations to ensure data integrity and compliance with regulatory standards. WORM backup provides a reliable solution for industries where preserving unaltered records is essential. ### Key characteristics of WORM backup: · **Immutable storage:** Once data is written, it becomes immutable, meaning it cannot be modified or deleted. · **Time-defined data retention**: Data stored using WORM technology has a predetermined retention period during which it cannot be altered. · **Audit trails**: WORM backup solutions often include audit trails, ensuring transparency and traceability of data access and modifications. ## WORM backup and regulatory compliance For industries regulated by bodies like the Securities and Exchange Commission (SEC) and Financial Industry Regulatory Authority (FINRA), WORM backup is not just a best practice but a requirement. These regulations mandate that certain types of financial data and communications are stored in an unalterable format for specific periods. ### SEC and FINRA compliance: · **SEC Rule 17a-4**: This rule stipulates that electronic records, including emails and financial transactions, must be preserved in a nonrewriteable and nonerasable format. · **FINRA rules**: like the SEC, FINRA requires members to store business-related electronic records in a WORM format to prevent alteration or tampering. ## Acronis Cyber Platform enables WORM backups: · **Audit trails:**Acronis has built-in audit capabilities and SIEM connector which enables data export in standard format (CEF/SYSLOG), with the possibility to configure alerts. · **Immutable storage:** Ensuring that backup data cannot be altered or deleted, this offers a robust solution for regulatory compliance and data security solution. · **Time-defined data retention:**Acronis enables flexible configuration of retention policies for backups and separately for immutable storage. These policies for immutable storage can still be edited in the **Governance** mode, but can’t be changed once the **Compliance** mode has been enabled. All together, these features improve the protection of backups for our partners and their customers: · **Protection against data tampering**: Immutable backup safeguards against unauthorized changes, deletions, or ransomware attacks. · **Compliance assurance**: By providing WORM capabilities, immutable backup solutions help organizations comply with regulatory requirements. · **Enhanced data security**: Immutable backup adds an extra layer of security, protecting against internal and external threats. ## Conclusion In conclusion, WORM backup technology is an essential component for organizations looking to ensure data integrity and comply with regulatory standards like those set by the SEC and FINRA. With the advent of immutable backup solutions, achieving WORM compliance has become more accessible and secure. As data protection becomes increasingly vital in the digital age, understanding and implementing WORM backup with [Acronis Cyber Platform (formerly Acronis Cyber Protect Cloud)](https://www.acronis.com/en-us/products/cloud/cyber-protect/) is a critical step toward safeguarding valuable information assets. [Cybersecurity](https://www.acronis.com/en/blog/tags/cybersecurity/) [Cyber protection](https://www.acronis.com/en/blog/tags/cyber-protection/) [Cyberthreats](https://www.acronis.com/en/blog/tags/cyberthreats/) [MSP cybersecurity](https://www.acronis.com/en/blog/tags/msp-cybersecurity/) [Data protection](https://www.acronis.com/en/blog/tags/data-protection/) [Corporate cybersecurity](https://www.acronis.com/en/blog/tags/corporate-cybersecurity/) [Disaster recovery](https://www.acronis.com/en/blog/tags/disaster-recovery/) [Data loss prevention](https://www.acronis.com/en/blog/tags/data-loss-prevention/) ## Written by ![Image 3: Acronis Editorial Team](https://staticfiles.acronis.com/images/content/d85707ae91461544212d39836dc32b42.png) Acronis Editorial Team Acronis is a global cyber protection company that provides natively integrated cybersecurity, data protection, and endpoint management for managed service providers (MSPs), small and medium businesses (SMBs), and enterprise IT departments. [Previous post](https://www.acronis.com/en/blog/posts/fortify-security-and-resilience-for-your-clients-with-nist/) [Fortify security and resilience for your clients with NIST](https://www.acronis.com/en/blog/posts/fortify-security-and-resilience-for-your-clients-with-nist/) [Next post](https://www.acronis.com/en/blog/posts/acronis-named-a-growth-and-innovation-leader-in-frost-radar-endpoint-security-2023-report/) [Acronis named a growth and innovation leader in Frost Radar™: Endpoint Security, 2023 report](https://www.acronis.com/en/blog/posts/acronis-named-a-growth-and-innovation-leader-in-frost-radar-endpoint-security-2023-report/) About Acronis Acronis is a leader in AI-native cyber protection, unifying data protection, cybersecurity, IT operations and hybrid infrastructure to deliver business continuity, security and compliance with less cost and complexity. More than 21,000 service providers trust Acronis to protect over 750,000 businesses in 150 countries. Acronis is headquartered in Schaffhausen, Switzerland. [Add as a preferred source on Google](https://google.com/preferences/source?q=acronis.com) ## Related stories Want to learn more? Read the latest stories featuring this solution on our blog. 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The developments build on a broader commitment to managed security: helping service providers protect the connected workspace while giving customers access to the expertise needed to investigate threats, respond effectively and maintain business continuity. **October 13, 2026**6 min read ![Image 6: Acronis Cloud Storage adds a recovery warranty](https://staticfiles.acronis.com/images/blog-card/6a693ef2012c6324f65b0b452c11b3d6.png) [Acronis Cloud Storage adds a recovery warranty](https://www.acronis.com/en/blog/posts/acronis-cloud-storage-adds-a-recovery-warranty/) Secure, scalable cloud storage with a recovery commitment backed by Acronis. The Anti-Ransomware Recovery Warranty that helps MSPs make recovery a visible part of the service they deliver. **October 12, 2026**4 min read