Cyber Threat Intelligence for Fintech: A Sector Built for Speed, Targeted for the Same Reason

Key takeaways

• UK fintech has become one of the country's most valuable growth sectors, but the same speed and connectivity that drive its success also expand its exposure to attackers.

• Phishing, stolen credentials, and weaknesses in APIs and third-party integrations remain the most common ways attackers reach fintech systems and customer funds.

• Large UK financial services firms are already feeling this pressure directly, with majority reporting of supply-chain attacks in the past year.

• Breach costs in UK financial services run well above the cross-sector average, making prevention far cheaper than recovery.

• As investment and firm numbers keep climbing, cyber threat intelligence is what allows fintechs to scale without scaling their risk at the same rate.

Cyber Threat Intelligence for Fintech: A Sector Built for Speed, Targeted for the Same Reason

Fintech was built to move faster than traditional finance. Faster onboarding, payments, product launches are all stitched together through APIs, cloud infrastructure, and a constant stream of third-party integrations. That speed is the sector's biggest competitive advantage, and it is also exactly what makes it such a rewarding target for attackers.

The UK sits at the centre of this industry. The country accounts for 11% of the global fintech market and is home to an estimated 2,500 fintech firms. Six of the world's top 10 fintech companies, as ranked by Fintech50, are headquartered in London. Investment has followed that momentum, with UK fintech attracting £5.4 billion in deal value in the first half of 2025 alone, according to KPMG's Pulse of Fintech analysis. Growth on this scale brings its own kind of pressure, and it is compounding alongside a threat landscape that is evolving just as quickly.

Why fintechs make such an attractive target

Fintechs sit at an unusual intersection. They hold the same kind of sensitive financial data as a bank, move money in real time like a payment processor, and build and ship software at the pace of a technology start-up. Each of these characteristics would attract attackers' interest, particularly when combined together.

Rapid growth means rapid expansion of the attack surface. Every new API integration, banking partner, or embedded finance product adds another potential entry point, often faster than security teams can fully assess. Fintechs also tend to rely heavily on a web of third-party vendors and infrastructure providers to deliver services, which means a weakness several steps removed from the fintech itself can still result in a direct compromise.

There is also a trust dimension which is unique to this sector. Fintechs succeed by convincing customers to disclose sensitive financial data and, in many cases, direct access to their money. That trust is valuable to build and expensive to lose, which makes fintechs a high-leverage target for attackers looking to cause maximum disruption or extract maximum value from a single successful intrusion.

How attackers are getting in

Despite the sector's technical sophistication, the routes attackers use remain familiar.

Phishing and social engineering continue to be a primary entry point. Attackers continue to impersonate banking partners, payment providers, or internal colleagues to persuade employees or customers to hand over credentials or approve fraudulent transactions.

Credential compromise follows a similar pattern to other financial services firms. Reused or stolen login details give attackers a way into internal systems that can go unnoticed for extended periods, particularly where multi-factor authentication (MFA) has not been consistently applied.

Weaknesses in APIs, third-party integrations, and unpatched infrastructure round out the picture, and are arguably the area where fintechs are most exposed. A single vulnerable API endpoint or misconfigured integration with a partner platform can expose customer data or payment flows well beyond the fintech's own perimeter.

The reality behind the growth numbers

Fintech's growth story and its risk story are increasingly the same story. Research from cybersecurity firm Orange Cyberdefense found that 58% of large UK financial services firms suffered at least one third-party supply chain attack in 2024, with almost a quarter hit three or more times. For a sector built almost entirely on interconnected platforms and partnerships, that level of exposure through the supply chain is a structural risk rather than a one-off incident.

The financial impact is significant. The average cost of a data breach for a UK financial services business reached £5.3 million, well above the £3.4 million average across all industries. For fintechs operating on tighter margins than established banks, and often still proving their business model to investors, a breach of that scale can be far more damaging than the headline figure alone suggests.

Building resilience without slowing down

None of this means fintechs need to sacrifice the speed that makes them competitive. It means the sector's approach to security needs to move at the same pace as its product development. A few measures are becoming standard practice across the strongest fintech security programmes:

• Zero-trust architectures that verify every request rather than assuming trust based on network location.

• MFA and biometric verification to strengthen identity checks at every customer and employee touchpoint.

• Real-time threat intelligence and automated response, meaning security teams can act on emerging threats as they appear rather than after the fact.

• Compliance automation, which is often referred to as RegTech, to keep pace with regulatory obligations across every jurisdiction a fintech operates in.

Where cyber threat intelligence fits in

The pattern across UK fintech is consistent with what shows up across financial services more broadly. Attackers are not relying on exotic new techniques. They are exploiting phishing, stolen credentials, and the growing web of third-party connections that fintechs depend on to function. The challenge for the sector is not a shortage of security investment, it is visibility into which partner, API, or vendor represents the next likely point of failure.

This is where cyber threat intelligence becomes a genuine competitive advantage rather than a compliance box to tick. Understanding which threat actors are actively targeting fintech and payments infrastructure, which vulnerabilities are being exploited in the wild, and where exposure sits across an expanding partner network allows security teams to anticipate incidents.

CYJAX works with organisations across financial services and fintech to provide the intelligence needed to see threats before they reach critical systems. If your organisation wants a clearer picture of its exposure across its platform, partners, and infrastructure, book a demo with CYJAX to see how tailored threat intelligence can support your growth.