Security & compliance

Your data, protected. Your standards, upheld.

Security and professional integrity aren't features — they're the foundation. Here's how A4 keeps your information safe and your engagements sound.

Data security

Encryption in transit (TLS) and at rest across the platform.

Role-based, least-privilege access with multi-factor authentication.

Continuous monitoring, logging and regular security testing.

Confidentiality

Client information is treated as strictly confidential at all times.

Access is limited to the team members working on your engagement.

Professional confidentiality obligations bind everyone at A4.

Compliance & professional standards

Work delivered in line with applicable accounting, audit and tax standards.

GDPR-aligned data handling for all personal data we process.

Engagements governed by clear terms and professional ethics.

Audit & quality controls

Layered review — preparer, reviewer and partner sign-off.

Standardised working papers and documented methodology.

Quality controls applied consistently across every engagement.

Technology & compliance

Hosted on reputable, GDPR-compliant EU infrastructure.

Regular encrypted backups and tested recovery procedures.

Vendor and sub-processor due diligence on the tools we use.

Client responsibility

Keep your portal credentials private and enable MFA.

Share information through the portal rather than insecure channels.

Let us know promptly of any changes to authorised users.

Ongoing improvements

Security and controls are reviewed and updated continuously.

We track regulatory change and adapt our processes.

Feedback and incidents feed directly into improvement.

Questions about security?

We're happy to walk your team through our controls in detail.

Talk to us

The client portal

Watch how an engagement starts.

Create an account, request your data, and receive your quote — then track every deliverable, deadline and document in the same secure workspace.

Open the portal

client.a4.com.mt

1Create account

2Request services

3Get your quote

Welcome to A4

Create your account

Full name

James Caruana

Work email

james@nexustrading.mt

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