With business accounting systems now serving as a hub for sensitive payroll, tax, and financial data, robust security is increasingly important for any organisation.
As digital accounting tools become integral for efficiency, understanding and evaluating security features has become essential for company leaders, not just IT teams.
Financial crime targeting businesses has grown more sophisticated, with fraudsters often seeking access to accounting systems through phishing, supply chain attacks or gaps in cloud security. The risks are considerable.
A breach of payroll or banking data can bring regulatory consequences, disrupt operations, and erode client trust.
If your business operates across borders or collaborates internationally, as is common for those involved in accounting Denmark or similar regions, compliance concerns can increase significantly.
Ensuring the security of your accounting platform is not simply an IT matter, but a strategic necessity for protecting company value and reputation.
Security Foundations Every Platform Should Have
Any credible online accounting service should provide baseline protections as standard. Data must be encrypted both in transit (as it moves between users and servers) and at rest (when stored on the provider’s systems), helping ensure intercepted data cannot be read by unauthorised parties.
Reputable providers host their platforms in secure data centres, with strong access controls and built-in redundancy to reduce physical and digital risks.
Regular security patching and updates are also critical.
It is important to ask vendors how quickly they address critical vulnerabilities, and whether their software development processes include secure coding practices and regular vulnerability assessments. If these fundamentals are lacking, more advanced features will not compensate.
Preventing Misuse With Access Management
Safeguarding against both external hackers and internal misuse requires layered identity and access management. Multi-factor authentication (MFA) helps ensure only the intended users can log in, making stolen passwords far less effective for attackers.
Role-based access controls limit what each employee or contractor can see and do, reducing broad access risks. Assigning the least-privilege permissions necessary by role limits exposure if credentials are compromised.
Look for session management features that log users out after inactivity and generate audit trails detailing who accessed which records or made key changes. These controls can deter malicious insiders and support investigations if security incidents occur.
Ensuring Privacy and Meeting Compliance Obligations
Increasingly strict data protection rules in the UK and EU mean you must scrutinise how accounting data is governed.
Choose platforms offering data residency options to specify where your information is stored, which can be important for UK GDPR, the EU GDPR, or sector-specific rules.
Platforms should provide clear data retention and deletion capabilities, allowing you to determine how long data is kept and verify removal when accounts are closed.
Regular encrypted backups protect against accidental loss or ransomware. You should also check that your provider explains who has access (including any sub-processors) and under what conditions data may be transferred internationally. Transparency remains vital for compliance and peace of mind.
Operational Resilience and Handling Disruptions
Even the most secure system can be affected by outages or cyber incidents. Evaluate whether the vendor maintains tested disaster recovery plans and shares uptime targets.
Reliable incident response processes help restore services quickly and keep you informed during issues. It is also wise to clarify what access you retain to your accounting data during planned platform maintenance or emergencies, so you can avoid operational standstills.
Protecting Integrations and External Connections
The appeal of online accounting platforms often lies in their integration with bank feeds, payment providers, CRM systems or app marketplaces. Yet every connection expands the potential attack surface.
Ensure APIs only grant access using narrowly scoped tokens with limited permissions, and that each new integration goes through appropriate approval workflows.
Audit which apps are connected periodically, remove those no longer needed, and pay close attention to changes involving bank accounts or payments, which should require additional authorisation steps.
Vendor Assessment and Practical Due Diligence

You do not need to be a cybersecurity specialist to compare security across platforms. Request independent security assurance reports, summaries of penetration testing, and security whitepapers where available.
These documents can provide insight into the provider’s controls, track record, and how they handle vulnerabilities. For meaningful comparison, ask all shortlisted vendors for the same information to support like-for-like judgements.
Avoiding Common Mistakes and Reducing Risk
Many security lapses are due to basic oversights. Avoid sharing user credentials among staff, and regularly audit user permissions to catch unnecessary or outdated access.
Ensure any user leaving the company is promptly removed, and that exported data files are encrypted or stored securely. Major changes, such as updating supplier bank details, should only proceed with proper multi-person approval to limit the risk of fraud.
Checklist for Secure Selection and Ongoing Practice
- Does your platform provide encryption in transit and at rest, and secure hosting?
- Are there MFA and robust access controls for every user type?
- Is there a clear, transparent privacy and data residency policy?
- How does the provider handle backups, deletion, and supplier access?
- Are integrations tightly managed and regularly reviewed for risk?
- Do you receive independent assurance reports and clear breach response plans?
- Does your business maintain staff training, strong password policies, and periodic permission reviews?
Applying this due diligence when evaluating and maintaining online accounting platforms helps protect not only your financial data, but also your long-term business reputation and compliance standing.