Most business leaders never think to ask who has access to their network. You know your employees have access, but what about your phone system vendor, HVAC maintenance contractors, security system installers, cleaning service management software, or equipment monitoring services?
Each of these vendors likely has remote access to your network through SSL-VPN technology. SSL-VPN served organizations well by replacing less secure methods like direct RDP connections and basic VPNs and has been considered best practice for secure remote access for years.
SSL-VPN stands for Secure Sockets Layer Virtual Private Network. It creates an encrypted tunnel that allows remote users to connect to your internal network through a web browser or client application, giving them access to company resources as if they were physically in the office.
The problem is that hackers have learned to exploit SSL-VPN systems directly, even those with multi-factor authentication enabled. Industry reports from August 2025 documented cybercriminals successfully breaching at least 28 organizations through fully patched SSL-VPN systems with MFA protection.
This means the technology itself has fundamental vulnerabilities that can’t be solved with better passwords or additional security layers. When attackers breach SSL-VPN, they get inside your network perimeter where your internal systems become potential targets depending on how well each system is individually secured.
How Current Remote Access Creates Vendor Security Risks
Most remote access systems work like a simple gate. Once someone is authenticated and “inside,” they’re past your main security perimeter. While individual systems still have their own protections, many internal systems rely on that perimeter to keep threats out. This creates three serious problems:
Problem 1: Excessive Access
SSL-VPN puts vendors inside your network perimeter where they can reach many internal systems. Your phone vendor should only interact with the phone system, but once inside the network, they’re in the same environment as your email servers, file shares, and business applications. Even with individual system permissions in place, this creates unnecessary exposure.
Problem 2: Shared Attack Pathways
SSL-VPN creates one entry point into your network that all vendors share. When hackers compromise any vendor’s login credentials, they’re inside your network perimeter with access to attack multiple internal systems. What starts as one compromised vendor account becomes many potential targets.
Problem 3: Insurance and Compliance Pressure
Cyber insurance providers are now flagging traditional SSL-VPN systems as unacceptable risks. Some exclude SSL-VPN related breaches from coverage entirely.
ZTNA Gives Vendors Only What They Need
Zero Trust Network Access (ZTNA) solves the vendor access problem by eliminating the network perimeter entry point entirely. Instead of letting vendors inside your network, ZTNA creates direct, secure connections to only the specific applications each vendor needs.
Think of it this way: SSL-VPN is like having a security guard at your office entrance where anyone who gets past the guard is inside the building with many doors to try. ZTNA is like having separate, secure entrances that take each vendor directly to only the one room they need, without ever putting them inside the main building.
This adds an extra layer of protection on top of your existing security. Even if individual system permissions aren’t perfect, vendors never get inside your network perimeter where they could exploit those weaknesses.
That means there are no shared pathways or excessive permissions. And there’s no way for an HVAC contractor to accidentally reach financial data.
- Phone vendor → gets access only to the phone system
- HVAC contractor → gets access only to climate controls
- Employees → get access only to their specific job-related applications
Learn why ZTNA is the next generation of remote access technology.
Check Your Vendor Access Now
Can you answer these questions right now?
- Which vendors have remote access to your network?
- What can each vendor actually reach once they’re connected?
- Does your cyber insurance policy exclude SSL-VPN related breaches?
If your IT team can’t answer these questions confidently, it’s time to bring in security experts who can.
Partner with Security Experts Who Stay Ahead of Threats
Cybersecurity changes fast. What worked last year might be a liability today, as evidenced by SSL-VPN technology going from a best practice to security risk. At Bellwether, we stay on top of new threats and help you make technology changes before they become emergencies.
We’re a SOC 2 Type 2 certified organization with our own Security Operations Center. We help business leaders develop security strategies that protect against current threats while preparing for what’s coming next.
Vendor access control is just one piece of your overall security strategy. Contact us to discuss how we help organizations stay ahead of cybersecurity risks while ensuring your technology serves your business goals.
