How Secure Is Your ERP Data?
An ERP system is the digital heart of a business. All financial data, customer information, inventory movements, order history, and accounting records live within this system. When you calculate the cost of a single day of data loss, consider that every sale, stock movement, invoice record, and accounting transaction from that day would be gone. For a mid-sized retail company, this translates to losses in the hundreds of thousands and a recovery process that can stretch over weeks.
Data loss scenarios are not limited to cyberattacks. Hardware failure, particularly disk corruption, is the most common cause of data loss. Records accidentally deleted through human error, ransomware attacks, databases corrupted during power outages, and natural disasters also top the threat list. None of these risks are theoretical; we have worked with companies that have experienced each one firsthand.
User Authorization and Access Control
The first layer of data security is proper authorization. Ensuring that each user can only access data relevant to their role is achieved through role-based access control. A cashier should be able to use the store sales screen but must not access accounting data, cost information, or sales details from other stores. Warehouse staff should be able to view inventory movements but not modify prices.
Transaction logging is an indispensable part of security. Who viewed, modified, or deleted which record, and when -- all this information must be recorded. For critical operations such as price changes, stock adjustments, or return processing, an approval mechanism should be activated, ensuring these actions can only be performed by authorized personnel. Password policy should enforce minimum character length, uppercase and lowercase letters, special characters, and regular password rotation. Two-factor authentication (2FA) should be enabled wherever possible.
Data Encryption and Network Security
Database encryption ensures that ERP data is stored in encrypted form on disk. This means that even if the server is physically stolen or unauthorized access to the disk is obtained, the data remains unreadable. SQL Server's Transparent Data Encryption (TDE) feature provides database-level encryption without performance degradation.
Using SSL/TLS encryption for data transmission prevents eavesdropping on communications between headquarters and stores or between remote users and the server. Firewall rules should be configured to allow only necessary ports and IP addresses to access the server. VPN connections should be mandatory for remote stores and home office employees, and direct ERP access over the internet should never be opened.
Backup Strategy
An effective backup strategy is based on the 3-2-1 rule: at least 3 copies of data should be maintained, stored on 2 different media types, with 1 copy physically located at a different site (offsite). While this rule may seem straightforward, in practice many companies store their backups only on a different disk of the same server; in the event of a server failure, both the primary data and the backup are lost together.
Daily automatic backup is the minimum standard and should be scheduled to run outside business hours. Weekly full backups should be taken, supplemented by daily incremental backups. Since incremental backups store only data that has changed since the last full backup, they save storage space and reduce backup duration.
Testing backups is just as critical as creating them. A restore test should be performed at least once a month. Many companies believe they are backing up their data, only to discover the backup is corrupted or incomplete when restoration is actually needed. Cloud backup options are the most practical way to meet the offsite copy requirement and provide an additional layer of protection against geographical disasters.
Disaster Recovery Plan (DRP)
A disaster recovery plan defines how quickly the business can return to normal operations in a worst-case scenario. RTO (Recovery Time Objective) determines how quickly the system must be brought back online. For a retail company, RTO is typically maintained between 4 and 8 hours; beyond that, sales losses reach unacceptable levels.
RPO (Recovery Point Objective) represents the maximum acceptable data loss. For a company performing daily backups, the RPO is at most 24 hours, meaning in the worst case the last 24 hours of data could be lost. If this timeframe is unacceptable for critical operations, more frequent backup or real-time replication solutions should be considered.
Disaster scenario drills should be conducted at regular intervals to prevent the plan from remaining only on paper. A full recovery drill should be performed at least once a year to test the team's familiarity with procedures and verify the plan's currency. Through our server and security services, we provide comprehensive infrastructure support including disaster recovery planning.
Conclusion
ERP data security is the responsibility of the entire organization, not just the IT department. Proper authorization, strong encryption, disciplined backup, and a tested disaster recovery plan protect your business's digital assets. The cost of these measures is extremely low compared to the cost of a data loss scenario.
To assess the security status of your ERP infrastructure and review your backup strategy, contact us. Our experienced team is ready to guide you on security configuration and backup planning for Nebim V3.
