SDS Posts

Is Your z/OS Environment Still Using FTP? It’s Time for a Security Upgrade

The silent workhorse of enterprise infrastructure is now under intense regulatory scrutiny. Mainframes can no longer hide behind assumptions of inherent security. Organizations must implement real-time monitoring, automated controls, and audit-ready documentation or risk devastating six-figure fines.

Is Your Mainframe Audit-Ready? (Most Organizations Would Fail This Test)

The silent workhorse of enterprise infrastructure is now under intense regulatory scrutiny. Mainframes can no longer hide behind assumptions of inherent security. Organizations must implement real-time monitoring, automated controls, and audit-ready documentation or risk devastating six-figure fines.

Mainframe Security Best Practices for Cybersecurity Awareness Month

Mainframes power mission-critical operations across financial services, healthcare, and government—yet they’re not immune to modern cyber threats. Organizations must prioritize encryption, strengthen access controls, and implement real-time monitoring. This Cybersecurity Awareness Month, discover five essential best practices that can protect your most sensitive data and prevent costly breaches.

Quarterly SDS Virtel Newsletter

The SDS Virtel Newsletter delivers quarterly insights on 3270 terminal emulation tips, product updates, and development news for both current and prospective customers. Discover how Virtel Web Suite modernizes mainframe access with secure, browser-based solutions that deliver significant cost savings and enhanced security.

The Hidden Compliance Risks: Why Your Mainframe Can’t Hide in the Shadows Anymore

Mainframes secure 80% of corporate data and process 90% of credit card transactions, yet nearly 20% of businesses have no formal policies to protect them. With the global average breach cost hitting $4.88 million and regulators demanding the same real-time monitoring and automated reporting from mainframes as they do from cloud platforms, this disconnect has become one of the most dangerous compliance blind spots in enterprise IT.

Eliminating FTP Vulnerabilities

Data breaches cost organizations $4.45 million per incident in 2024, with many stemming from unsecure FTP protocols that transmit sensitive data in plain text. VitalSigns for Secure Transfer (VST) eliminates FTP vulnerabilities without requiring changes to JCL, batch jobs, or application code—delivering enterprise-grade encryption and compliance while your teams continue using familiar processes.

7 Critical Mainframe Security Blind Spots That are Costing Banks Money in 2025

Despite mainframes processing $10.4 trillion in U.S. credit and debit card transactions annually, most banks treat them as security islands invisible to modern monitoring platforms—a gap that contributes to the $4.88 million average breach cost. From unmonitored ESM administrative access to invisible CICS transactions and the inability to correlate mainframe events with network threats, these seven critical blind spots leave financial institutions vulnerable to fraud, insider threats, and multi-million dollar compliance failures.

Modernizing Without Migrating: 5 Cost Optimization Techniques for Legacy Mainframe Environments

Organizations face mounting pressure to reduce IT costs, yet mainframes remain essential for processing critical workloads in finance, insurance, retail, and government. By consolidating monitoring tools, optimizing workloads to reduce CPU peaks, strengthening security with encrypted transfers, modernizing application access beyond terminal emulators, and implementing real-time performance analytics, enterprises can dramatically cut costs while extending the value of their mainframe investments, no costly rip-and-replace required.

Optimizing Mainframe Performance with Automation

While mainframes process 90% of all credit card transactions and power 68% of the world’s production workloads, many organizations still rely on manual monitoring, reactive performance management, and outdated access protocols that create bottlenecks and security risks. Modern automation tools from SDS transform mainframe operations through intelligent monitoring, predictive analytics, zero-trust security, and intuitive user interfaces, shifting teams from firefighting mode to proactive optimization.

SHARE Orlando 2024 Recap

SDS attended SHARE Orlando and unveiled two new products. VitalSigns for Secure Transfer (VST) and Virtel Screen Redesigner, both products offer customers modern solutions for the mainframe.

Peeling the Onion of SFTP: Options for Securing z/OS File Transfers

Securing mainframe file transfers requires navigating multiple layers of solutions, from FTPS and SSH tunnels to SFTP and PGP encryption, each with distinct advantages and limitations. This comprehensive guide peels back the “onion” of z/OS FTP security options to help organizations choose the right combination of tools, including the VFTP-SSH collaboration, to protect data both in transit and at rest.

Mainframe FTP Compliance – Overview

File Transfer Protocol (FTP) is a commonly used protocol for transferring files between computers on a network. However, using FTP can also create security vulnerabilities that can compromise the confidentiality, integrity, and availability of sensitive information.

Mainframe Security Compliance – Main Components

While mainframes are known for their reliability and security, they are not immune to cyber threats. Organizations must implement comprehensive security measures including access controls, encryption, network isolation, and continuous monitoring to maintain compliance with regulatory frameworks like GDPR, HIPAA, and PCI DSS.

SHARE Atlanta 2023 Recap

The SDS team was at the SHARE conference in Atlanta and showcased updates to the VitalSigns suite of products and E-business Server.

TN3270, 3270 terminal, 3270 applications… What is 3270?

The IBM 3270 terminal, first released in 1971, revolutionized mainframe access and became ubiquitous in corporate environments throughout the ’70s and ’80s. While the physical terminals have disappeared, the 3270 data stream and applications live on through modern emulators, with innovations like web-based thin clients bridging the gap between legacy systems and contemporary interfaces.

Seven Vulnerabilities of Thick-Client TN3270 Emulators

Thick-client TN3270 emulators expose mainframe 3270 applications to seven critical security vulnerabilities, including exposed terminal emulation code, reliance on outdated browsers, and unaudited macros. Download our whitepaper to learn how Virtel Web Access’ browser-based thin-client emulator eliminates these risks and protects your organization’s data and network.

Three Use-cases of ConicIT in action

ConicIT’s predictive analytics engine learns system behavior patterns over time and proactively collects diagnostic data before performance problems fully materialize, enabling first-fault problem resolution. By detecting anomalies in CPU behavior, database resource contention, and transaction patterns, ConicIT provides system programmers with comprehensive causal analysis and relevant monitoring data at their fingertips—making diagnosis significantly easier without adding noticeable system load.

SHARE Pittsburgh: News and Highlights

Recap from SHARE Phoenix

Featured Solutions at SHARE St. Louis 2018

Summer 2018 Update

Chop your Mainframe Costs

Tighten up Mainframe Security Weaknesses

You Can’t be Too Secure

Browsing the Mainframe

Solving those Network Issues

Getting the Help You Need

System, Network, and Application Automation

Your Friendly Neighborhood Online Expert

Keeping ‘In the Know’

What’s Going On?

Keeping Control of Your Mainframe Costs

Getting a Grip on IP Networks

Mainframe REXX: What it Does

Mainframes and FTP

Find and Stop Useless FTP Traffic

The Easy Way to Test Enterprise Extender

The Oft-Forgotten VIP Batch Trace

Monitoring FTP: Why SMF is Not Enough

Avoiding the Pitfalls of PKTTRACE

Pitfalls of PKTTRACE