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Top 10 IT Mistakes Investment Banks Make in 2026-2027

October 08, 2026

Most IT problems at banks and advisory firms don't start with a dramatic failure. They start with a series of reasonable short-term calls that never got revisited while the team chased the next deal.

For a firm of 10 to 300 people, technology usually grows one fix at a time until nobody has the full picture. That's when the mistakes start to cost real money, real deals, and real standing with regulators and clients.

Here are the 10 most common IT mistakes we see banks and advisory firms make heading into 2026 and 2027, and the practical fix for each.

1. Treating IT as Break-Fix Instead of Managing It

The most common mistake is waiting for something to break, then paying someone to fix it. Break-fix feels cheaper until you add up the downtime during a live process, the lost hours, and the surprise invoices.

Reactive IT also means small problems grow in the dark. A failing server or an unpatched system sits unnoticed until it takes the firm offline at the worst possible moment in a deal.

Where the right IT partner helps: Proactive managed IT flips the model: monitoring, patching, and health checks happen before things break, for a predictable monthly cost instead of unpredictable emergencies.

2. Running Without an IT Roadmap or a Strategic Advisor

Plenty of firms have someone who keeps the lights on and nobody who plans two years ahead. Without a roadmap, technology spending happens in a panic, with no sense of how each purchase fits the bigger plan or the firm's growth.

That's how firms end up with mismatched tools, forgotten renewals, and budgets that lurch from year to year.

Where the right IT partner helps: A virtual chief information officer (vCIO) builds a technology roadmap and budget tied to where the firm is going, so investments are planned, prioritized, and defensible to the partners.

3. Losing the Map of Your Own Environment

Ask many firms for a current list of their systems, licenses, and administrator accounts and you'll get blank stares. When documentation is thin or credentials live in one person's head, the firm can't see what it has.

Most firms only discover the gaps when someone finally reconciles the environment: forgotten accounts still active, licenses paid for and unused, and no diagram of how anything connects.

Where the right IT partner helps: A partner documents and inventories the whole environment, so the firm owns a current map of its own technology instead of depending on one person's memory.

4. Paying for Licenses and Tools Nobody Uses

Software sprawl is expensive and easy to miss. Firms routinely pay for duplicate tools, seats for staff who left, and subscriptions nobody remembers signing up for.

We regularly find active licenses for departed employees and overlapping tools that do the same job. It rarely gets cleaned up because nobody owns the review.

Where the right IT partner helps: A partner audits your licensing and consolidates overlapping tools, which usually recovers real money and reduces the number of places your confidential data lives.

5. Letting Bankers Use AI With No Policy

Adoption is racing ahead of control. In banking, generative and agentic AI already make up 70% of publicly announced AI implementations, yet 63% of organizations have no AI governance policy.[1]

Silence doesn't stop AI use. It pushes bankers to free consumer tools where MNPI and client data are at risk, and a high level of shadow AI added an average of 670,000 dollars to the cost of a breach.[2]

Where the right IT partner helps: A partner can put structure around AI: a usage policy, a review step before new tools go live, and clear rules on what confidential data a tool may touch, plus training so staff use approved tools well.

6. Treating Recordkeeping and Communications as Someone Else's Problem

Off-channel communications have cost the industry dearly: since 2021, more than 100 firms have paid over 3 billion dollars in SEC penalties for recordkeeping failures.[3]

When bankers run deals over personal texts and messaging apps with no capture, the firm carries both a compliance exposure and a security gap. Assuming compliance owns it while IT owns something else is how the gap survives.

Where the right IT partner helps: A partner can deploy compliant capture and archiving across approved channels, so communications are retained and supervised instead of scattered on personal phones.

7. Skipping MFA and Modern Endpoint Protection

Multi-factor authentication (MFA) blocks the overwhelming majority of credential-based attacks and is cheap to deploy, yet many firms still run it only on email. Many also still rely on basic antivirus that misses targeted attacks.

These two controls stop most common attacks. Going without them in 2026, in a business built on confidential information, is the security equivalent of leaving the vault open overnight.

Where the right IT partner helps: A partner enforces phishing-resistant MFA everywhere and deploys advanced endpoint protection like Endpoint Detection and Response (EDR) and Managed Detection and Response (MDR), backed by 24/7 monitoring.

8. Ignoring Third-Party and Vendor Risk

Banks run on outside parties: fund administrators, data-room providers, counterparties, and placement agents. Each connection is a door into your data, and most breaches now involve a third party somewhere in the chain.

Firms that never vet a vendor's security, or can't say which vendors hold their data, inherit every weakness in that chain.

Where the right IT partner helps: A partner builds a vendor risk program: an inventory of who holds your data, security reviews before you connect, and monitoring so a partner's breach doesn't quietly become yours.

9. Never Testing Backups or Running a Security Assessment

Trusting a green checkmark that says the backup ran is not the same as proving you can recover, and modern ransomware hunts for backups specifically. Just as important, an outside assessment finds the gaps before an attacker or an examiner does.

Firms that skip both are flying blind: they assume they can recover and assume they're secure, without ever testing either assumption.

Where the right IT partner helps: A partner runs scheduled test restores on immutable, isolated backups and an independent security assessment against a recognized framework, then hands you a prioritized plan.

10. Depending on One Person for Everything IT

The single most fragile setup is the one that runs entirely through one person, whether that's a COO wearing an IT hat or a lone internal tech. When they're out, on leave, or gone, the firm is exposed.

One person also can't cover a discipline that now runs around the clock and changes weekly. Burnout, knowledge gaps, and no coverage at night are built into the model.

Where the right IT partner helps: A partner gives you a full team, 24/7 coverage, and a vCIO who owns the strategy, so the firm stops betting its operations and its reputation on one person's availability.

The Bottom Line

None of these mistakes come from bad intentions. They come from a busy firm making reasonable short-term calls that never got a second look. The cost shows up later, as downtime in a live deal, wasted spend, a failed insurance renewal, an enforcement action, or a breach.

The fix is the same thread running through all 10: treat technology as something you manage on purpose, with a plan, clear ownership, and controls you can prove to a client or an examiner. Firms that do this spend less and carry less risk, and they can answer a diligence questionnaire without flinching.

That's what Framework IT does for banks and advisory firms: proactive support, a real roadmap led by a vCIO, layered security, compliant communications capture, and documentation that stands up to insurers, clients, and regulators. Framework IT is a Chicago-based managed IT services firm founded in 2008, with a team of more than 40 professionals, most of them engineers who live in the Chicagoland area. We help investment banks, advisory shops, and other financial and professional services firms with IT support, strategy, and security, and with putting structure around AI so it can be used safely.

If more than a couple of these sound like your firm, schedule a conversation with our team to map the fixes in priority order: frameworkit.com/discoverycall

About the Author

Adam Barney is President and Managing Partner of Framework IT, a Chicago-based managed IT services firm he's helped lead for more than 15 years. He and his team of 40+ professionals specialize in IT support, strategy, and cybersecurity for small and mid-sized businesses. Adam's insights on business technology have been featured in the Harvard Business Review, the Washington Post, and Fox 32 Chicago.

Citations

Every statistic above is sourced to a live page that states it. Verify links are live before publishing.

[1] In banking, generative and agentic AI now represent 70% of publicly announced AI implementations (Evident, Q4 2025); 63% of organizations have no AI governance policy (IBM 2025 Cost of a Data Breach Report). https://evidentinsights.com/insights/use-case-trends-q4-2025 ; https://www.ibm.com/think/x-force/2025-cost-of-a-data-breach-navigating-ai

[2] A high level of shadow AI added an average of 670,000 dollars to breach costs in 2025. IBM 2025 Cost of a Data Breach Report. https://www.ibm.com/think/x-force/2025-cost-of-a-data-breach-navigating-ai

[3] Since 2021, more than 100 firms have paid over 3 billion dollars in SEC civil penalties for off-channel communications recordkeeping failures. Holland & Knight, summarizing SEC enforcement, December 2024. https://www.hklaw.com/en/insights/publications/2024/12/a-long-winters-nap-sec-off-channel-communications