Database Security Analysis Service

What Is Database Security Analysis?

Database security analysis is a professional cyber security service that assesses the database systems holding an organisation's critical data comprehensively — for vulnerabilities, misconfigurations, user permissions, access controls, patch status, logging mechanisms and data security.

Databases are among the systems holding an organisation's most valuable digital assets. A significant proportion of customer information, financial records, personal data, commercial information, user accounts, application data and operational records is stored directly in databases.

From an attacker's perspective, reaching the database is therefore often one of the most valuable objectives of an attack.

The database security analysis service delivered by SecureSys assesses database systems not only for known technical vulnerabilities but also for user and role structures, the authorisation model, security configurations, network access, audit mechanisms and sensitive data security.

The core objective is to answer this question:

"Who can access the critical data in our database, which security weaknesses exist, and could the current configuration be abused by a real attacker or an unauthorised user?"

Why Does Database Security Matter?

An organisation's web application, mobile application or API service may be the attacker's first target. For the attacker, however, the real value usually lies in the data behind the application.

At the end of a successful attack, the objective may be to reach customer databases, obtain user credentials, alter financial records, exfiltrate personal data or manipulate critical transactions.

Database security should therefore not be seen as the technical responsibility of DBA teams alone.

Database security is also a matter of:

information security, personal data security, business continuity, regulatory compliance and enterprise risk management

A single misconfigured user account, or an over-privileged service account, can give an attacker access to millions of records.

It is therefore important that databases are subject to a separate security assessment, independent of the application infrastructure.

SecureSys Database Security Analysis Service

The SecureSys database security analysis service assesses organisations' critical database infrastructure from the perspective of an attacker and an unauthorised user.

Depending on the database type and the organisation's architecture, the work can examine:

security configurations, user accounts, roles, privileged accounts, password policies, access controls, network connections, audit settings, logging, encryption configuration, patch level and access to critical data

The aim is not simply to run an automated vulnerability scan.

Technical security controls are assessed together, taking the database's real usage model and business criticality into account.

What Is a Database Security Assessment?

A database security assessment is the systematic evaluation of a database's overall security level.

The assessment does not look only at the software version and known CVEs.

Many different security components are analysed together: who can access the database, which permissions users hold, whether default accounts are present, whether security logging is enabled, and how access to sensitive data is controlled.

A database security assessment can therefore provide a broader security picture than classic vulnerability assessment work.

What Is a Database Vulnerability Assessment?

A database vulnerability assessment identifies the known security vulnerabilities and weak security configurations present in database systems.

A database engine running an old version, or with security patches unapplied, can allow attackers to exploit known vulnerabilities.

The analysis can therefore assess the database's:

product version, patch level, security updates and relationship to known vulnerabilities

Identifying CVEs alone is not sufficient, however.

Even a fully patched database can carry serious data breach risk because of misconfigured user permissions.

In the SecureSys approach, vulnerabilities + configuration + authorisation + data access are therefore assessed together.

Database Permission Analysis

One of the most critical areas in database security is authorisation management.

What permissions a user or application genuinely needs in order to do its job has to be determined.

Over time, however, users' roles change, new applications go live, and permissions granted temporarily become permanent.

Organisations end up with over-privileged user and service accounts as a result.

This gives an attacker a significant advantage.

It may go unnoticed that a compromised low-privilege account can in fact reach critical data tables.

Database security analysis therefore assesses the permissions held by users and roles in order to identify risks against the least privilege principle.

Privileged User Analysis

Database administrators and highly privileged accounts can perform operations across almost the entire database.

The security of DBA, SYS, SYSTEM, sa, root and similar highly privileged accounts is therefore critical.

Privileged account analysis can assess how these accounts are used, whether they are shared, whether they are used directly by applications, whether their access is recorded, and whether there are more privileged users than necessary.

Separating highly privileged accounts from personal user accounts, monitoring their activity and controlling them through PAM solutions where required can raise the security level considerably.

Why Do Service Accounts Create Risk?

Corporate applications generally connect to databases through service accounts.

The passwords for these accounts are often held in application configuration files or in a connection string.

If the service account holds more privilege than it needs, compromise of the application can put the entire database at risk.

An application account that only needs to read from and write to specific tables holding DBA-level privilege, for example, is a serious security problem.

The following should therefore be assessed in detail for service accounts:

privilege level, password policy, purpose, and which systems they connect from

The Security of Default Accounts

Some database products create default user accounts during installation.

Leaving these accounts active despite them not being used creates unnecessary attack surface.

Accounts with default or easily guessable passwords in particular can become critical vulnerabilities.

Database security analysis can check unused accounts, default accounts, unlocked test users and accounts belonging to former staff.

Disabling or removing unused accounts reduces the attack surface.

Reviewing Database Password Policies

It is important that users connecting directly to the database use strong authentication mechanisms.

Password policies may need to be assessed against criteria such as minimum length, complexity, password history, lockout and password lifetime.

Using complex passwords alone is not sufficient, however.

MFA or PAM-based access control can provide stronger security, particularly for privileged accounts.

Databases Exposed to the Internet

Database services being directly exposed to the internet is a significant security risk in most architectures.

Microsoft SQL Server, PostgreSQL, MySQL or Oracle services being reachable from the internet allows brute force, credential stuffing and known-vulnerability attacks to be directed straight at the database.

Database security analysis can therefore assess:

which IP addresses the database is reachable from, which ports are open, and the network segmentation configuration

As a general principle, only the application and management systems that need to reach the database should be permitted to connect.

Network Segmentation and Database Security

Critical databases sitting on the same segment as user networks make it easier for an attacker to reach the database after gaining access to the corporate network.

Network segmentation is therefore an important component of database security.

Direct access to databases can be restricted to application servers, management servers or designated DBA systems.

Firewalls and access control lists can also be used to block unnecessary connections.

This approach limits the attacker's lateral movement capability.

What Is Database Hardening?

Database hardening is the application of secure configurations in order to reduce the database system's attack surface.

Hardening is not simply enabling a security feature.

It includes many controls: disabling unused services, deactivating default accounts, restricting network access, applying secure authentication policies and enabling audit mechanisms.

Database security analysis compares the existing configuration against vendor security recommendations and corporate policy in order to identify hardening needs.

CIS Benchmarks and Database Security

CIS Benchmarks provide secure configuration recommendations for a range of systems and technologies.

Where suitable benchmarks exist for database products, authentication, audit, network security, user management and system configuration can be assessed in a more standardised way.

Applying any benchmark directly to a production environment is not always correct, however.

The organisation's application dependencies, performance requirements and business processes also have to be taken into account.

In the SecureSys approach, it is therefore important that security recommendations are assessed together with the organisation's real architecture.

Oracle Database Security Analysis

Oracle Database is one of the database platforms most widely used in critical corporate applications.

An Oracle database security assessment can evaluate user and role permissions, the use of SYS/SYSTEM accounts, audit configuration, network access, database links and the associated security settings.

Controlling highly privileged users and auditing access to critical data are particularly important security requirements in Oracle environments.

The database version and the currency of security patches can also be examined.

Microsoft SQL Server Security Analysis

Microsoft SQL Server security analysis covers the assessment of MSSQL systems in terms of users, roles, authentication, configuration and audit structures.

The sa account, the use of SQL Authentication, Windows Authentication configuration, database role memberships and highly privileged users can be examined in particular.

Over-privileged application service accounts are one of the most frequently encountered security problems in SQL Server environments.

SQL Server instances being unnecessarily reachable across the network also increases the attack surface.

PostgreSQL Security Analysis

PostgreSQL is heavily used in modern corporate and open source applications.

A PostgreSQL security assessment can evaluate user and role structures, superuser accounts, authentication policies, pg_hba.conf configuration, network access and audit mechanisms.

Broad access definitions in pg_hba.conf, or weak authentication methods, can create security risk in particular.

Keeping superuser accounts as limited as possible, and ensuring application users can reach only the data objects they need, is important.

MySQL and MariaDB Security Analysis

MySQL and MariaDB are widely used, particularly in web applications.

The security analysis can assess:

root user access, user host definitions, password policies, network access, anonymous accounts and user permissions

It is important that the application account can reach only the databases and tables it needs.

The database being reachable over a public network should be assessed with particular care.

Privilege Escalation Risks

When an attacker gains access to a low-privilege database account, they will attempt to obtain higher privilege.

Incorrect role memberships, dangerous function permissions or misconfigurations can make this easier.

Database security assessment should therefore analyse not only the permissions users currently hold but also:

whether a low-privilege user could escalate their privilege through other roles or functions

This allows the assessment to be made from an attacker's perspective.

Identifying Sensitive Data in the Database

If an organisation does not know which tables hold which critical information, protecting that data effectively is very difficult.

Databases can hold personal data, payment card information, identity data, financial data, health information or trade secrets.

Database security analysis can therefore usefully identify where sensitive data resides, or assess the existing data classification structure.

Knowing where sensitive data sits allows access, audit, encryption and masking policies to be built more accurately.

What Is Data Masking?

Data masking is a security approach in which sensitive data is altered or masked so that its real values are not visible, particularly in test and development environments.

Transferring production data directly into a test environment creates significant data security risk.

Copying real customer national ID numbers, phone numbers or payment card details into a developer environment, for example, causes unnecessary data exposure.

Data masking allows test data to be used that resembles the format of the real data without representing real individuals.

Encryption at Rest

Encryption at rest refers to encrypting the data stored in the database or on disk.

If database files or disks are compromised, encryption provides an additional layer of security.

Encryption being enabled is not sufficient on its own, however.

Where the encryption keys are stored and who can access them also matter.

Database security analysis should therefore assess key management processes as well as the encryption mechanism itself.

Encryption in Transit

Data on database connections being sent across the network unencrypted allows unauthorised parties to read the traffic.

It is therefore important that appropriate TLS mechanisms are used on connections between the application and the database.

The encryption in transit check becomes critical particularly for databases reached across different network segments or over cloud connections.

What Is Database Activity Monitoring?

Database Activity Monitoring – DAM is a security approach that provides central monitoring of the user and application activity carried out in databases.

DAM systems help answer questions such as: who accessed which data, which query they ran, which critical table was changed, and which operation a privileged user carried out.

In organisations processing critical data in particular, database activity monitoring delivers value for audit and compliance as well as for attack detection.

The Importance of Database Audit Logs

After a data breach, one of an organisation's most important questions is:

"Who accessed which data?"

If the database audit mechanisms are not correctly configured, it may not be possible to answer that question.

Logging critical operations is therefore important.

Logging every query without limit, however, causes large data volumes and performance problems.

Audit policies should therefore be built on a risk basis.

The following can be prioritised in particular:

highly privileged user activity, user and role changes, sensitive data access, critical table changes and failed authentication attempts

Protecting Logs Against Tampering

Generating logs is not sufficient on its own.

Once an attacker obtains high privilege, they will attempt to alter or delete the logs in order to hide their activity.

It is therefore important that critical database audit records are forwarded to a central SIEM or a secure log system.

This prevents an attacker with high privilege on the database from simply deleting the historical logs.

Database and SIEM Integration

Integrating database logs with SIEM systems can contribute significantly to security operations.

A DBA account normally used only during working hours running high-volume queries at night, for example, can generate a critical alert for the SOC.

Similarly, a user querying thousands of records in a short period, or the creation of a new privileged account, can be detected through SIEM correlation.

Database security then ceases to be a periodic check and becomes a continuously monitored security process.

Insider Threat and Database Security

Not all threats to databases come from external attackers.

Authorised employees misusing their accounts, or holding more access than they need, can also create serious risk.

If an employee who should only reach specific customer records for their job can query the entire customer dataset, for example, a data leakage risk arises.

The question who can access what is therefore critical in database security.

Used together, permission analysis and database activity monitoring provide stronger visibility for detecting insider threats.

Segregation of Duties

On critical systems, a single user being able to control every operation creates significant risk.

The same DBA user being able to create users, delete audit records and access critical data, for example, is a control weakness.

Segregation of duties aims to distribute critical privileges across different users and roles.

This reduces both the risk of misuse and the possibility of unauthorised operations going unnoticed.

Database Security and PAM

Privileged Access Management systems can be used to bring the access of highly privileged database users under control.

With a PAM approach, privileged account passwords can be managed centrally, user access can be tied to an approval process, and critical sessions can be recorded.

PAM can offer a significant security advantage particularly in environments where DBA accounts are used through a shared password.

It can be useful to assess the highly privileged user model against PAM requirements during database security analysis.

SQL Injection and Database Security

Although SQL injection is largely treated as an application security problem, its consequences affect the database directly.

If an application contains a SQL injection vulnerability, the attacker can run queries within the privileges of the application's database account.

This is where the value of the least privilege approach becomes clear.

If the application account can only operate on the few tables it needs, the impact of a SQL injection attack is limited.

If the application account holds DBA privilege, however, a single web application flaw can put the entire database at risk.

Web security and database security should therefore not be considered independently of one another.

Backup Security

Protecting the database strongly while leaving its backups uncontrolled creates a serious security gap.

Database backup files generally contain the whole of the production data.

The following should therefore be assessed for backups:

who can access them, whether they are encrypted, where they are stored and their retention period

Rather than reaching the database, an attacker can obtain the same data by taking an unprotected backup file.

The Security of Test and Development Databases

While organisations make significant security investment in production databases, test and development environments are often protected more weakly.

If production data is copied into those environments, the same sensitive information ends up held at a much lower security level.

The use of real data in test and development environments should therefore be restricted as far as possible, or masking applied.

Weak configurations such as default passwords and broad network access should also be prevented in development databases.

Cloud Database Security

In managed database services such as AWS RDS, Azure SQL and Cloud SQL, many infrastructure controls are managed by the cloud provider.

The security of identity, access and network configuration, however, generally remains the organisation's responsibility.

A cloud database security assessment can evaluate public access, security group and firewall rules, IAM integration, encryption, backup and audit configuration.

Cloud database services accidentally left exposed to the internet create serious security risk in particular.

How Does the Database Security Analysis Process Work?

In the analysis carried out by SecureSys, the organisation's database architecture and critical systems are identified first. Oracle, MSSQL, PostgreSQL, MySQL and other database platforms are brought into the inventory.

User and role structures, privileged accounts, service accounts and network access are then assessed.

The next stage examines security configuration, patch level, audit mechanisms, encryption and sensitive data access controls.

The findings are prioritised by technical risk and business impact.

The work concludes with an applicable improvement plan for raising the organisation's database security level.

What Does a Database Security Analysis Report Contain?

A professional database security report should contain more than "setting on/off" information.

Why each finding creates risk, and how it should be remediated, has to be explained.

Depending on project scope, the report can include:

the database affected, a description of the finding, the risk level, the current configuration, the security impact, a possible attack scenario and remediation recommendations

An executive summary showing the overall security level and the priority risks can also be prepared for management.

Retesting After Database Security Analysis

Once the organisation has completed the necessary security changes, the critical findings can be re-checked.

This forms the cycle:

Analysis → Risk Identification → Hardening → Retest → Verification

Verifying critical findings such as high-risk permission problems and internet-exposed services through a retest is particularly important.

Database Security and KVKK

A significant proportion of the systems processing personal data store that data in databases.

Database security is therefore one of the critical technical security areas for the protection of personal data.

Unauthorised users being able to reach personal data, excessive permissions being granted, or audit records not being kept all increase data security risk.

Database security analysis helps assess an organisation's personal data security controls from a technical perspective.

Database Security and ISO/IEC 27001

Access control, privileged access, logging and secure configuration are critical topics in information security management systems.

Database systems are among the most important platforms on which these controls are applied.

The findings from a database security assessment can therefore provide important input to an organisation's information security risk management processes.

Database Security and PCI DSS

Database security becomes especially critical in environments processing payment card data.

Restricting access to card data, recording activity, applying the necessary encryption mechanisms and controlling privileged accounts are all important.

In systems within PCI DSS scope, database security controls have to be assessed together with the organisation's existing compliance structure.

How Often Should Database Security Be Checked?

Database security is not a one-off exercise carried out at installation.

New users can be created, roles changed, new applications connected and security updates released.

Periodic security assessment of critical databases is therefore important.

The security analysis can be repeated in particular after:

major version changes, new database deployments, cloud migration, critical application changes, a data breach, or wide-ranging changes to user permissions

Why SecureSys Database Security Analysis?

Database security cannot be assessed by running a vulnerability scanner.

It requires understanding who uses the database, which data is critical and what permissions users hold.

The SecureSys database security analysis service assesses technical vulnerabilities, security configuration, user and role structures, privileged accounts, audit mechanisms and data access controls as a whole.

Oracle, Microsoft SQL Server, PostgreSQL, MySQL and other database infrastructure can be assessed according to the organisation's scope.

Depending on what emerges, improvement recommendations can also be produced in connection with database hardening, database activity monitoring, PAM, SIEM and data security processes.

SecureSys is a Türkiye-based cyber security company providing database security analysis, database security assessment, database vulnerability assessment and security hardening services for Oracle, Microsoft SQL Server, PostgreSQL, MySQL and other enterprise database systems.

Frequently Asked Questions

What is database security analysis?

It is the examination of databases for vulnerabilities, user permissions, security configuration, audit, network access and sensitive data security.

What is the difference between a database security assessment and a vulnerability assessment?

A vulnerability assessment focuses largely on identifying known technical flaws, whereas a database security assessment carries out a broader evaluation including user permissions, configuration and data access controls.

Can Oracle database security analysis be carried out?

Yes. In Oracle environments, users, roles, privileged accounts, audit, network access and security configuration can be assessed.

Can MSSQL security analysis be carried out?

Yes. Microsoft SQL Server can be assessed for users, roles, authentication, highly privileged accounts, audit and configuration controls.

Can PostgreSQL security analysis be carried out?

Yes. PostgreSQL user and role structures, superuser access, authentication, network access and security configuration can be examined.

What is database activity monitoring?

DAM is a security approach that monitors the user and application activity carried out in databases and makes critical data access visible.

Does database security analysis cause data loss?

The scope and methods to be used are agreed before the analysis, taking the continuity of production systems into account. Active tests that could create risk are planned separately.

Can hardening be carried out after database security analysis?

Yes. A hardening plan can be built for the security weaknesses identified, covering configuration and access improvements, with a retest carried out afterwards.

Your Organisation's Most Critical Asset Is Its Data

An attacker reaching the application is a significant security problem. An attacker reaching the database behind it takes the impact of the incident to a far more critical level.

Database security should therefore not be the responsibility of DBA teams alone; it should be one of the core components of the organisation's overall cyber security strategy.

With the SecureSys database security analysis service you can identify the vulnerabilities, misconfigurations, over-privileged users and critical data access risks in your databases, and build applicable security improvements for your database infrastructure.

Get in touch with SecureSys to define the scope of a security analysis for your Oracle, Microsoft SQL Server, PostgreSQL, MySQL or other critical database systems and to request a proposal.