Accounting Firm Cybersecurity
Cybersecurity Assessment Checklist
Accounting firms hold some of the most sensitive financial data in circulation. Ten questions that show whether yours is protected the way clients — and insurers — expect.
Access control
✓
Multi-factor authentication is enabled for all staff and all platforms.
MFA is a common cyber insurance requirement. It should be enabled for Microsoft 365, QuickBooks Online, remote access, and other cloud platforms — with no quiet exceptions. One account without MFA is enough for a credential-based attack to start.
✓
Access to client financial data is limited to staff who need it.
Not every employee needs every client file. Role-based access means a compromised account — or a departing employee — can't reach data beyond the role. Overly open access is one of the gaps that show up most often in accounting firm security reviews.
✓
Remote access runs through a VPN or zero-trust solution.
Pulling client data from home over an unprotected connection is a serious exposure. Remote work should go through a properly configured VPN or zero-trust remote access — not ad hoc screen sharing or consumer remote-desktop tools.
Data protection and backup
✓
QuickBooks data and client files are backed up automatically and tested regularly.
Untested backups are a liability, not a safety net. Confirm that company files, client documents, and email back up automatically, that jobs complete successfully, and that someone has restored a copy on purpose — not just assumed it would work.
✓
Backups live somewhere that survives ransomware.
Ransomware often tries to encrypt or delete reachable backups before it locks the live systems. An effective setup keeps at least one copy off-network, immutable, or both, so an attack does not take both the data and the recovery path.
✓
Client files sent by email are protected or go through a secure portal.
Sending tax returns, financial statements, and W-2s in plain email is a privacy and liability risk. Secure portals or encrypted delivery keep sensitive documents from being intercepted or opened by the wrong person.
Threat prevention
✓
Email security filters phishing, malware, and impersonation attacks.
Accounting firms are high-value phishing targets because of the financial data they hold and the wire transfers they handle. Advanced filtering, anti-spoofing controls (SPF, DKIM, DMARC), and staff awareness training belong together — not as optional extras.
✓
Endpoint protection is installed and actively monitored on all workstations.
Modern endpoint protection goes past traditional antivirus. It uses behavioral detection and monitoring to catch threats before they spread. Machines that are not protected and watched are quiet attack surfaces.
Compliance and insurance
✓
Your cyber insurance requirements are documented and verifiably met.
Some firms learn mid-claim that coverage is disputed because paperwork claimed controls that were never really in place. Policies usually spell out technical expectations — MFA, endpoint protection, backup practices, incident response. Make sure you can show compliance with each one.
✓
You have a written plan for responding to a security incident.
When ransomware, a breach, or a phishing compromise hits, the first hour matters most. A documented incident response plan tells the right people what to do quickly, limits damage, and supports the notification steps your state rules and insurance policy expect.
What your score means
9–10 checked
Strong cybersecurity posture
Core controls are in place. A security assessment can confirm they are implemented for real — not only listed on paper — and catch gaps before the next cyber insurance renewal.
6–8 checked
Meaningful gaps exist
Some protections are in place, but the unchecked items pose a real risk to client data, insurance coverage, and possibly regulatory expectations. A focused assessment helps decide what to fix first.
5 or fewer checked
Client data is at significant risk
Firms with several cybersecurity gaps are attractive targets for ransomware and data theft. An assessment can name the most critical exposures and give a practical plan to close them before an incident forces the issue.