Cybersecurity
for Accounting Firms
Protect Your Firm. Protect Client Data. Stay Ahead of Cyber Threats.
Accounting firms handle some of the most sensitive information a client can share: tax returns, financial records, personally identifiable information, banking information, payroll data, and business documents.
That makes your firm a valuable target for phishing, ransomware, malware, credential theft, and other cyber threats.
Celestnova combines managed cybersecurity, endpoint protection, ransomware defense, email security, employee awareness, backup, monitoring, and ongoing IT support to help accounting firms build a stronger security environment.
You focus on your clients.
We help protect the technology behind your business.
Your Firm's Data Is Valuable. So Is Your Reputation.
A single compromised device or employee account can expose sensitive client information, interrupt tax operations, and create significant business disruption.
Accounting firms also face security expectations around protecting taxpayer and financial information.
Your Firm's Data Is Valuable. So Is Your Reputation.
Targeted Cyber Threats
Phishing emails, malicious attachments, credential theft, ransomware, and business email compromise can target employees and devices every day. A single breach can expose sensitive client details and interrupt operations.
Sensitive Client Information
Your systems contain tax returns, Social Security numbers, financial statements, payroll records, and confidential bank details. Protecting this valuable financial data is critical for maintaining long-term trust.
Regulatory Compliance Requirements
Your technology environment must actively support the security policies and mandatory safeguards documented in your firm’s compliance program. Implementing these controls helps protect client data and reduce organizational risk.
Tax Season Operational Continuity
When critical filing deadlines approach, a compromised workstation, infected network, or locked file quickly becomes a major business crisis. Uninterrupted access to systems ensures your firm stays productive when it matters most.
A Multi-Layered Approach to Accounting Firm Security
Data-driven Insights
- Complete FTC & IRS compliance mapping
- Custom-tailored policy frameworks
- Audit-ready security documentation
Endpoint Protection
We use Bitdefender-powered next gen- endpoint security as part of our managed cybersecurity approach to help protect business workstations and devices against malware and other threats.
- Next-generation antivirus protection
- Endpoint detection and response capabilities
- Ransomware protection
- Behavioral threat detection
- Threat prevention and remediation
- Centralized security management
Ransomware Protection
Ransomware can prevent your team from accessing critical files and disrupt your operations when you need them most.
Celestnova combines endpoint protection with managed backups and monitoring to create multiple layers of defense.
- Ransomware detection and protection
- Threat isolation and remediation
- Ransomware rollback capabilities where supported
- Secure cloud backups
- Off-site recovery protection
- Ongoing monitoring
Advanced Email Security
Email remains one of the most common ways attackers attempt to reach employees.
Our advanced email security services help reduce exposure to malicious and deceptive messages.
- Phishing protection
- Malicious attachment protection
- Suspicious link detection
- Spam and unwanted email filtering
- Business email threat protection
- Support for safer email practices
Security Awareness Training
Your employees are an important part of your firm’s security.
Technology can block many threats, but your team also needs to know how to identify suspicious emails, links, attachments, login requests, and social engineering attempts.
- Security awareness education
- Phishing awareness
- Safe password practices
- Social engineering awareness
- Secure handling of client information
- Ongoing security education
Patch Management
Outdated software can create security weaknesses attackers may attempt to exploit.
Celestnova continuously manages security updates and patches across supported devices.
- Automated patch management
- Operating system updates
- Application updates
- Security vulnerability reduction
- Patch monitoring
- Ongoing maintenance
24/7 Monitoring & Response
Security doesn’t stop when your office closes.
Depending on your selected plan, Celestnova provides continuous monitoring and security operations support designed to help identify suspicious activity and security events.
- 24/7 device monitoring
- Security event monitoring
- Threat alerts
- Endpoint visibility
- Security response workflows
- Escalation when action is required
Security Controls Around the Requirements That Matter
IRS Pub 4557
Taxpayer Data Security
We help implement security controls that support the IRS recommendations for protecting taxpayer information, including access controls, malware protection, encryption, backups, employee awareness, and security practices.
FTC Mandates
Information Security Program
For organizations subject to the FTC Safeguards Rule, we help support the technical safeguards and security processes that form part of a written information security program.
GLBA
Financial Data Protection
The Gramm-Leach-Bliley Act establishes requirements around protecting certain customer financial information. Our managed security services can help organizations implement technical safeguards that support their broader information security program.
WISP
Documented Security Program
We help create and maintain WISP documentation that reflects your firm’s actual technology environment, security controls, policies, and procedures.
One Managed Security Layer That Fits Your Accounting Firm
Nova Shield Essential
$69
/device/month
Essential Protection for Your Accounting Firm
- Next-Generation Antivirus + EDR
- Ransomware Protection & Rollback
- 250GB Secure Cloud Backup
- 24/7 Device Monitoring & Patch Management
- 24/7 Live IT Support
- Annual Preventive System Maintenance
- IT Asset Management
- Remote Device Lock & Data Wipe
- Secure Credential Vault
- End User Self-Service Portal
Best for: Solo CPAs, bookkeepers, and small tax practices with 1–5 devices seeking core IT security and reliable support.
Nova Shield Professional
$129
/device/month
Includes: Everything in Shield Essential,+: Advanced Security for Growing Accounting Firms, plus:
- 500GB Business Data Backup
- Advanced Email Security
- Security Awareness Training
- Network Discovery & Asset Visibility
- Asset Warranty Tracking
- Semi-Annual System Optimization
- Enhanced Security Reporting
- WISP Support & Security Documentation
Best for: Growing firms with 5–10+ devices that need advanced cybersecurity, employee training, and WISP compliance documentation.
Nova Shield Elite
$179
/device/month
Includes: Everything in Shield Professional, +: Maximum Resilience for Security-Conscious Firms, plus:
- 1TB Full System Image Backup
- Microsoft 365 Cloud Backup (Exchange, OneDrive, SharePoint, Teams, OneNote, Planner & Lists)
- Google Workspace Backup
- 24/7 Security Operations Monitoring
- Dark Web Monitoring
- Quarterly Preventive Maintenance
- Advanced Security Assessment Reports
- Identity Protection & Microsoft Entra ID Backup
Best for: Established accounting practices requiring maximum resilience, complete cloud backups, and active threat monitoring.
A Straightforward Security Onboarding Process
Step 1: Discovery & Assessment
We review your devices, users, applications, email environment, backup setup, and current security controls.
Step 2: Security Setup
We deploy and configure the security and management services included in your selected plan.
Step 3: Compliance Alignment
We prepare your WISP and help align supporting controls where applicable.
Step 4: Ongoing Support
We continue monitoring, supporting, and improving your security and help your staff understand security best practices.
Powered by Security Solutions That Meet Global
Compliance Standards
Securing Every Digital Endpoint Across Your Firm
Workstations & Laptops
Advanced endpoint protection, patch management, ransomware defense, and proactive monitoring keep every device protected.
Business Email
Reduce phishing attacks, business email compromise, and malicious attachments before they reach your team.
Cloud & SaaS environments
Microsoft 365, Exchange Online , OneDrive , SharePoint , Teams , Google Workspace , Other supported business applications
Your Team
Security awareness training helps employees recognize phishing attempts and follow safer security practices.
Security Questions From Accounting Firms
Know Before You Begin
Is antivirus enough for an accounting firm?
What cybersecurity software does Celestnova use?
Celestnova uses Bitdefender as part of its managed endpoint security stack, together with our broader monitoring, management, backup, support, and security services.
Does Celestnova help with IRS Publication 4557?
We help accounting firms implement security controls that can support the safeguards recommended in IRS Publication 4557, including areas such as endpoint protection, malware protection, backups, access controls, employee awareness, and security practices.
Does cybersecurity make my firm compliant with the FTC Safeguards Rule?
No single cybersecurity product or managed service automatically makes a business compliant. Celestnova helps implement and manage security controls and can support WISP documentation, while your firm remains responsible for maintaining its overall information security program and meeting applicable requirements
Do you provide a WISP?
Yes. WISP support is included with our applicable managed IT plans and can also be addressed as a dedicated compliance service.
Can you work with our existing IT provider?
Yes. Our services can be structured to complement an existing IT team where additional cybersecurity, monitoring, backup, security awareness, or compliance support is needed.
Which Nova Shield plan should an accounting firm choose?
For many growing accounting firms, Nova Shield Professional provides a strong balance of endpoint security, backup, email protection, security awareness, reporting, and WISP support. The appropriate plan ultimately depends on your firm’s devices, users, applications, data, and security requirements.
