Organizations in highly regulated industries face a frustrating paradox. The same file transfers that keep operations running also create their biggest compliance vulnerabilities. Every patient record, financial statement, and customs document that moves between systems represents both business necessity and regulatory risk.
A single ransomware group has exploited managed file transfer software three notable times, hitting Accellion in 2021, MOVEit in 2023, and Cleo in 2024. Yet too many organizations still treat SFTP security and file transfer compliance as afterthoughts, configured once and rarely revisited. Understanding what’s actually at stake in each vertical, and why traditional approaches keep failing, is the first step toward building a secure file transfer strategy that doesn’t keep your security team up at night.
Why Shared File Transfer Platforms Keep Getting Exploited
Most organizations don’t have a file transfer problem. They have a target problem.
The breaches that hit platforms like MOVEit, Finastra, and Cleo weren’t primarily the result of missed patches or manual processes. They were zero-day vulnerabilities, which by definition were exploits for which no patch existed at the time of the attack. The more fundamental problem is architectural: when thousands of organizations share a single SaaS platform, a single zero-day becomes a single point of failure for all of them. Attackers don’t just compromise one company; they compromise every company on that platform simultaneously.
Today’s healthcare organizations send protected health information to dozens of external partners. Financial institutions exchange data with regulators, auditors, and counterparties across multiple jurisdictions. Logistics companies move customs documentation through complex international supply chains where a single compliance gap can halt shipments at the border.
The common thread? A shared attack surface. SaaS MFT platforms are high-value, highly visible targets precisely because compromising one platform yields access to thousands of customer environments at once. And because a SaaS platform must remain open to serve all its customers, it cannot simply block incoming traffic while a zero-day is being investigated; it must keep the doors open.
Organizations that deploy file transfer infrastructure in their own environments are not exposed to this dynamic. If a vulnerability is discovered, they can immediately restrict access and stop the bleeding without waiting for a vendor.
Achieving HIPAA-compliant file transfer, PCI-DSS compliance, or CTPAT certification requires more than written policy. It requires infrastructure that enforces those controls automatically, every time.
Now, let’s look at what the issues have been in some key industries.
Healthcare: MOVEit Transfer Breach (2023)
In May 2023, ransomware exploited a zero-day in Progress Software’s MOVEit Transfer, a file transfer tool used widely in healthcare. The breach affected over 3.1 million individuals across multiple CMS contractors, and contributed to a record-breaking year for healthcare data theft. In 2023, healthcare organizations lost over 133 million patient records across 725 breaches affecting 500+ records.
Why it matters: Shared SaaS platforms create blast-radius risk—one vulnerability compromises thousands of customers simultaneously. Self-hosted SFTP infrastructure eliminates this shared risk pool, allowing immediate containment without waiting on vendor responses.
Sources:
- HIPAA Journal: Biggest Healthcare Data Breaches of 2024
- Becker’s Hospital Review: Healthcare Data Breaches Set Record in 2023
Finance: Finastra Breach (2024)
In November 2024, attackers accessed Finastra’s SFTP server undetected for days, extracting data stored unencrypted. Finastra serves 45 of the world’s top 50 banks, and the breach exposed 888,627 individuals’ financial and personal data including Social Security numbers and financial account information.
Why it matters: Financial regulations (PCI-DSS, SOX, GLBA) require demonstrable controls and audit trails. Vendor breaches create compliance liability. Automated, consistently enforced file transfer removes human error and ensures logs meet auditor standards.
Sources:
- Claim Depot: Finastra Data Breach
- Frigg Business Solutions: Finastra Data Breach Analysis
- Krebs on Security: Fintech Giant Finastra Investigating Data Breach
Logistics: Cleo Managed File Transfer Breach (2024)
In December 2024, attackers exploited Cleo’s file transfer software, targeting supply chain and logistics companies. Cl0p’s alleged victims of the 2024 Cleo compromise were disproportionately associated with the supply chain and logistics sectors, accounting for approximately 20 percent of the listed organizations, compared to approximately 2.8 percent observed across the ransomware threat landscape. Hertz, which also owns the Dollar and Thrifty rental brands, confirmed the attack between October and December 2024 exposed customers’ names, contact information, dates of birth, credit card information, and driver’s license information.
Why it matters: File transfer failures halt supply chains—missed customs docs mean containers stuck at ports. Self-hosted SFTP ensures documentation moves automatically, logs comprehensively, and can be retrieved instantly.
Sources:
- ZeroFox: Cl0p Publishes Data of Cleo Compromise Victims
- SecurityWeek: Hertz Discloses Data Breach Linked to Cleo Hack
- Fast Company: Hertz Says Hackers Stole Customer Data in Vendor Breach
What Auditable, Self-Hosted File Transfer Actually Means for Compliance
So how do organizations escape this cycle? The compliance advantage of deploying file transfer infrastructure in-house isn’t about patches or updates. It’s about three things: control, isolation, and auditability.
Self-hosted deployment means your blast radius stays contained. Unlike a shared SaaS platform, a compromise of one customer’s SFTP Gateway instance doesn’t cascade to other organizations. Each deployment is its own isolated environment. If a threat is detected, your team controls the response — including immediately blocking all inbound traffic — without waiting on a vendor.
Automated transfer workflows mean no manual configuration for routine transfers. Once connections are established, files flow automatically based on predefined rules. No one needs to remember to set up a new folder or update permissions. This eliminates the human variability that creates compliance gaps in manual processes.
Automated error handling means failures don’t go unnoticed. When transfers fail, the compliance team is alerted immediately rather than sitting undetected until an audit or a missed deadline exposes them. Failed transfers don’t sit undetected for months.
Continuous, built-in logging eliminates the need to manually assemble an audit trail. Every transfer, every access, and every encryption event is automatically logged in a format auditors can consume directly. Compliance reviews don’t require weeks of forensic reconstruction.
SFTP Gateway achieves this by connecting legacy file-transfer workflows to cloud storage backends. Organizations keep the SFTP interfaces that their partners already know. But behind the scenes, files are stored in the cloud with automatic encryption, granular access controls, and comprehensive logging.
For organizations still relying on legacy mainframe systems and EDI workflows, StorageLink replaces aging solutions like IBM Connect:Direct with the same enterprise-grade reliability, but with modern encryption, compliance logging, and cloud-native architecture. This bridges the gap between legacy infrastructure and contemporary security requirements without forcing costly system replacements.
The Broader Industry Context
Beyond these three case studies, the pattern is clear. Manufacturing remains the most targeted industry at 40% of incidents, followed by finance and insurance at 16%, and transportation at 11% globally according to the IBM X-Force 2025 Threat Intelligence Index. Verizon’s 2025 Data Breach Investigations Report found that third-party involvement in breaches doubled year-over-year, jumping from 15% to 30%, highlighting how vendor vulnerabilities ripple across supply chains and partner ecosystems.
Sources:
- IBM X-Force 2025 Threat Intelligence Index
- Verizon: 2025 Data Breach Investigations Report
- Verizon 2025 DBIR – Third-party Risk Explosion
Shared SaaS file-transfer platforms create systemic risk because a single zero-day vulnerability exposes all customers simultaneously. Organizations that deploy file transfer infrastructure in their own environments are not in that risk pool.
Schedule a demo to see exactly how SFTP Gateway and StorageLink are deployed in your environment and how they can meet your specific compliance and security requirements.
