ICAEW / ACCA & HMRC Data Protection

Protect client tax records, payroll data, and BACS workflows from cyber attackers.

Accountancy practices hold the keys to HMRC gateways, company payroll, and high-value client bank details. HackGuardX secures your website, client portals, and Microsoft 365 tenant continuously.

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Your business is a target. Hackers only need one weakness.

A single cyberattack could cost accountancy firms thousands of pounds, expose sensitive client data, disrupt operations and trigger serious regulatory fines. Hackers don't just target large corporations; automated attacks scan every UK business for an easy way in.

Why accountancy firms are targeted: Attackers target UK accountants for Business Email Compromise (intercepting fee invoices and client tax refunds) and ransomware extortion during peak Self Assessment and VAT filing deadlines.

Peak risk window

Any time an attacker finds one unpatched weakness

UK compliance context

Aligned with ICAEW Cyber Security guidance, HMRC agent security expectations, NCSC Cyber Essentials, and UK GDPR Article 32 special financial data safeguards.

The top cyber risks for Accountancy Firms

Critical

Microsoft 365 Mailbox Compromise & Invoice Redirection

Attackers phish a single fee-earner login, create silent inbox forwarding rules, and send altered bank sort-code instructions to clients.

Critical

Weak DMARC & Domain Spoofing

Without strict DMARC (p=quarantine/reject), criminals impersonate your practice domain to send convincing fake HMRC tax links to your client base.

High

Vulnerable Client Portal & WordPress Plugins

Outdated document upload plugins or unhardened client portal subdomains expose sensitive management accounts and P60/P11D files.

Find your weaknesses before hackers do

HackGuardX continuously scans the digital infrastructure accountancy firms rely on, helping you identify and fix threats before they become costly breaches.

Microsoft 365 Tenant Auditing

Detects missing MFA, legacy IMAP/SMTP authentication, and unauthorized external mail forwarding rules across all partners and staff.

Domain & Email Spoofing Protection

Continuously validates SPF, DKIM, and DMARC enforcement so fraudsters cannot spoof your practice's email address.

Website & Portal Vulnerability Scanning

Checks your marketing site and secure document portal weekly for TLS flaws, missing security headers, and outdated components.

Run a free security check for your accountancy firm domain

Passive and non-intrusive. Enter your domain and we'll email you the report.

Safe Passive DNS, TLS & Header Inspection

Non-intrusive public check • Active scanning requires verified ownership

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Accountancy Firms: cybersecurity FAQs

Why would hackers target accountancy firms?+

Attackers target UK accountants for Business Email Compromise (intercepting fee invoices and client tax refunds) and ransomware extortion during peak Self Assessment and VAT filing deadlines.

What is the biggest cyber risk for accountancy firms?+

Microsoft 365 Mailbox Compromise & Invoice Redirection. Attackers phish a single fee-earner login, create silent inbox forwarding rules, and send altered bank sort-code instructions to clients.

Does HackGuardX help accountancy firms with compliance?+

Yes. Aligned with ICAEW Cyber Security guidance, HMRC agent security expectations, NCSC Cyber Essentials, and UK GDPR Article 32 special financial data safeguards. Every scan produces timestamped evidence you can share with insurers, regulators and clients.

How quickly can accountancy firms get started?+

Run a free passive exposure check in under a minute with just your domain. Full continuous monitoring on the Business plan connects in around 10 minutes, with no hardware or agents to install.