IT Security for Financial Firms: What Are the Biggest Risks?

IT security for financial firms such as wealth management practices, accounting firms, CPA partnerships, and financial advisory offices occupy a unique position in the IT security landscape.

They handle some of the most sensitive personal and financial data that exists. They are subject to regulatory requirements including SEC, FINRA, and state level data protection mandates. They are frequently targeted by sophisticated attackers who know that financial firm databases contain valuable credentials, account information, and high net worth client data.

And they are typically small businesses. They are staffed by financial professionals who are experts in their field but not in information security, and they run on IT infrastructure that has grown organically over many years without a guiding security framework.

This post covers the patterns Black Box Consulting sees most often when assessing IT security for financial firms: the vulnerabilities that appear again and again, and the interventions that make the biggest difference.

The Threat Landscape for Financial Services SMBs

Before discussing specific vulnerabilities, it is worth understanding who is targeting small financial services firms and why.

The assumption that attackers only go after large financial institutions is dangerously incorrect. Small financial firms are targeted specifically because:

• They hold high value data (client financial information, tax records, account credentials) comparable in value to data held by much larger institutions.
• They have significantly less security infrastructure than regulated entities like banks, which makes them easier targets.
• Compromising a small advisory firm can provide a pathway to the large financial institutions that firm’s clients use.
• Wire fraud and business email compromise attacks targeting financial workflows yield direct financial returns.

The FBI’s Internet Crime Complaint Center reports that business email compromise, where attackers impersonate executives or vendors to redirect wire transfers, cost businesses more than $2.7 billion in documented losses in a single recent year. Financial services firms are disproportionately represented among the victims.

The 3 Vulnerabilities We Find in Almost Every Financial Firm

Vulnerability 1: Email Based Multi-Factor Authentication

Multi-factor authentication is now universally recommended and widely understood as a basic security requirement. What is less well understood is that not all MFA is equally effective.

Email based MFA, where a verification code is sent to your email address, is the weakest form of MFA in common use. If an attacker has already compromised your email account, they can intercept the verification code. If they have compromised a colleague’s email account, they may be able to initiate a password reset through that colleague’s email and bypass MFA entirely.

It is one of the most common gaps we find in IT security for financial firms: email based MFA is often still the primary method for at least one critical system. The standard Black Box Consulting implements for financial services clients is app based MFA (using applications like Microsoft Authenticator or Google Authenticator) for every system that accesses financial data or client information.

Vulnerability 2: No Formal Offboarding Process

Employee and contractor turnover in financial services is not unusual. Advisors move between firms. Administrative staff changes. Contractors are brought in for specific projects. Each departure creates an access management challenge: the credentials, permissions, and system access that person held need to be revoked promptly and comprehensively.

In practice, offboarding in small financial firms is frequently informal and incomplete. A departing employee’s corporate email may be disabled while their CRM access is not. Their access to a client portal may stay active for months, and access to systems as sensitive as portfolio management platforms can linger for more than a year after someone leaves.

Formal offboarding checklists, automated deprovisioning workflows, and regular access reviews are standard components of the IT security for financial firms framework we implement for financial services clients.

Vulnerability 3: Fragmented and Unsecured Client Data

Client data in small financial firms tends to accumulate in multiple locations over time:

• The official CRM
• A partner’s personal cloud storage
• An older document management system still in use for legacy files
• Email inboxes that have never been archived or properly backed up
• Physical files that were partially scanned but never fully digitized

This fragmentation creates multiple problems. It makes consistent security controls nearly impossible to apply. It makes compliance documentation extremely difficult. And in the event of a breach or a litigation hold, it makes it impossible to identify with confidence what data exists, where it is, and who has had access to it.

Data consolidation, migrating client data to a single, properly secured, properly permissioned repository, is always on the Black Box Consulting remediation roadmap for financial services clients. It is rarely the first thing we do, because it takes time to do correctly, but it is always a priority.

The Interventions That Make the Biggest Difference

The security interventions that produce the most meaningful risk reduction for IT security for financial firms are remarkably consistent from one firm to the next.

Privileged Access Management

Implementing the principle of least privilege, so every user has access only to the data and systems their specific job function requires, is one of the highest impact interventions we implement. When a compromised credential carries minimal access rights, the damage an attacker can do with it is dramatically limited.

Phishing-Resistant Email Security

Business email compromise starts with email. Advanced email security that includes sender verification, link scanning, attachment sandboxing, and AI based anomaly detection dramatically reduces the effectiveness of phishing and BEC attacks. This is standard in every Black Box Consulting financial services implementation.

Dark Web Monitoring

Credentials compromised in third party data breaches often appear on dark web marketplaces before the breach is publicly disclosed. Continuous dark web monitoring for client domains and email addresses provides early warning of compromised credentials before they are used against the firm. Firms are often unaware their credentials have been exposed until monitoring flags them.

Incident Response Planning

Not every incident can be prevented. A documented, tested incident response plan that spells out who does what, in what order, when something goes wrong dramatically reduces the cost and duration of recovery. Every Black Box Consulting financial services client has a documented IR plan that is reviewed annually and tested through tabletop exercises.

The Regulatory Dimension

Financial services firms face a regulatory environment that adds complexity to every IT security for financial firms decision:

• Registered investment advisors are subject to SEC cybersecurity requirements.
• Broker-dealers face FINRA expectations.
• Firms handling consumer financial data are subject to the FTC Safeguards Rule, which was significantly strengthened in 2023 to require specific technical, administrative, and physical safeguards for customer financial information.

Black Box Consulting maintains current knowledge of the regulatory requirements affecting financial services clients and designs security implementations that satisfy not just current requirements but the direction regulation is heading. The goal is for clients to be audit ready at any time, not scrambling when an examination is announced.

If your financial services firm has not recently reviewed its IT security for financial firms posture against current regulatory requirements, that review is overdue. The regulatory environment has become significantly more demanding in the past three years, and the consequences of non-compliance have grown accordingly.