Your Next Data Breach Is Already on Someone Else's Server, Report Warns

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In an era of digital interdependence, the greatest threat to your organization’s cybersecurity may not come from within — it might arrive via your most trusted partners.

That’s the warning embedded in Verizon’s 2025 Data Breach Investigations Report, which found that third-party vendors and service providers were involved in 30 percent of all data breaches last year, up from just 15 percent in 2023.

The shift has been stark and fast. With modern enterprises embracing API ecosystems and shared platforms, companies no longer control the full perimeter of their own digital infrastructure.

The result is an expanded attack surface — one where supply chains have become the new frontline of cyber warfare.

The recent data breach involving a customer service provider linked to Adidas underscored this vulnerability.

The breach didn’t originate from inside Adidas, but from its digital ecosystem. And this trend isn’t limited to retail.

Financial institutions, which once relied on internal firewalls and rigid architecture, now find themselves exposed to the security practices — or lapses — of every integrated third-party platform they touch.

Legal fallout is catching up fast. Cybersecurity expert Philip Yannella notes that data breach lawsuits have exploded, jumping from 400 in 2021 to over 2,000 last year.

“We’re seeing more breaches and potentially more expensive ones,” Yannella warned. “If you’re a bank, you’ve got to worry quite a bit about your vendors.”

While human error continues to factor into roughly 60 percent of breaches — whether through misconfigured settings, leaked credentials, or phishing — those errors increasingly originate outside the organization’s own staff.

As data flows between firms, vendors, and cloud-based systems, the chain is only as strong as its weakest node.