01technical control
Encrypted transmission and session protection
Protect transmissions between clients and VPN nodes and limit connection credentials and session state to the necessary lifetime.
SingLinkVPN Security and Privacy Protection
Learn how SingLinkVPN protects network connections through encrypted transmission, connection lifecycle control, DNS and IP leak protection (Safe Mode), client security and zero-log architecture, and view the scope, conclusions and verification information of the 2026 third-party security audit.
Six verifiable security areas
This page describes security capabilities by technical controls, scope of application, and sources of evidence. The implementation of different client versions may be different. The specific status is subject to the current client and audit scope.
02Verify by platform
DNS, IP and WebRTC leak protection (Safe Mode)
Check that name resolution, IPv4, IPv6, and browser related traffic bypasses the expected tunnel path.
03Audit coverage
Connection life cycle and exception recovery
Covers connection establishment, network switching, automatic reconnection, route recovery and temporary status cleanup after the connection ends.
04Audit coverage
Account, session and API access control
Restrict account, token, session, and interface access, and check for risks of unauthorized access, replay, and unauthorized calls.
05Verify by version
Client local data and update integrity
Check local configuration, sensitive data, installation packages, update processes, and platform permission boundaries.
06Structure and Policy
Zero-logging and private data processing architecture
User activity logs are not created, recorded, or saved from the beginning, and accounts and support materials are limited to necessary uses and periods.
SingLink Shield security system
The SingLink Shield security system is SingLinkVPN's real-time protection system. It identifies and blocks risky behavior in real time, protecting users' privacy and keeping connections stable for other users. SingLink Shield records no user logs at any point, responds in real time and uses continuously updated protection technology.
About SingLink Shield v1.2Real-time detection and blocking of risky behavior
SingLink Shield responds instantly, identifying and blocking risky behavior at the network level in real time, including malicious sites and abuse.
Protects privacy and connection stability
By blocking risky behavior, SingLink Shield protects users' privacy and keeps connections stable for other users.
No user logs at any point
SingLink Shield records no user logs at any point, in line with SingLinkVPN's zero-log principle: user activity logs are never created, recorded or stored.
Continuously updated protection technology
SingLink Shield uses continuously updated protection technology to identify and block risky behavior in real time.
Cross-Platform Security Audit in 2026
In July 2026, VPNTestor Platform completed the SingLinkVPN cross-platform third-party security audit. The report found no unfixed critical, high, medium or low risk vulnerabilities within the listed version, test environment and audit scope, and the final score was 100/100.
The audit results only reflect the scope and testing time points listed in the report, and do not mean that any software will never have security risks in the future.
SHA-256
c925b9328a73365b2213157280ab828c8f7fed9bd25799af6d1dd6bf34c1dc2eSecurity control and verification status
Do not use unverifiable competitive comparisons. Each capability only describes SingLinkVPN’s currently disclosed controls, scope of application, and sources of evidence.
| security control | function | Applicable scope and status | evidence |
|---|---|---|---|
| Encrypted transmission | Protect network data and connection sessions in VPN tunnels. | Confirm by client and protocol version | Technical white paper |
| DNS and IP leak protection (Safe Mode) | Prevents resolution requests or network traffic from bypassing the intended tunnel path. | Confirmed by platform and included in the audit | Audit report |
| Abnormal connection and status cleaning | Handles disconnections, network switchovers, route recovery, and temporary states. | Has been included in the audit scope | Audit report |
| Zero log architecture | No logs of user network activity are created, recorded or saved. | Operational Structure and Privacy Policy | privacy policy |
Not creating an activity log, instead deleting it afterwards
SingLinkVPN’s zero-log principle is that user network activity logs are not created, recorded, or saved from the beginning. The temporary status required for connection, account and order information, customer service conversations and third-party audit scope belong to different data categories, and the purpose, retention period and destruction rules must be explained respectively.
Third-party client security audits are not equivalent to permanent guarantees for the entire operating system. The zero-logging commitment, temporary status processing and data destruction rules are subject to the current privacy policy and actual system architecture.
Read privacy policyCross-platform checking and version boundaries
The report covers the following clients and management interfaces. The page will not automatically infer that the functions of a certain platform are also supported by other platforms; the function and version status will be continuously updated based on subsequent verification.
iOS
Included in the audit scope in 2026
iPadOS
Included in the audit scope in 2026
Android
Included in the audit scope in 2026
macOS
Included in the audit scope in 2026
Windows
Included in the audit scope in 2026
Linux
Included in the audit scope in 2026
Apple TV
Included in the audit scope in 2026
Web management panel
Included in the audit scope in 2026
About SingLinkVPN Security Audit
Has SingLinkVPN passed a third-party security audit?
Yes. VPNTestor Platform completed a cross-platform security audit listing the version and test scope in July 2026, and the final score of the report was 100/100.
What does a 100/100 rating mean?
It means that no critical, high, medium or low risk vulnerabilities were found that remain unfixed according to the testing methods, versions, environments and scope listed in the report. It is not a permanent guarantee for all future releases.
Does the audit ensure that there will be no future security breaches?
No. Security audits reflect inspection results at a specific point in time and scope. Software updates, dependency changes, and new attack methods can all change the risk status.
What platforms does the audit cover?
The report lists iOS, iPadOS, Android, macOS, Windows, Linux, Apple TV, and web admin panels.
Is a security audit equivalent to a zero-log audit?
Not equivalent. The technical scope defined by the client and platform security audit inspection report; zero logs also involves server-side data processing, operational processes and privacy policies, which need to be explained and verified separately.
How to verify that the downloaded report has not been modified?
Download the Markdown report and SHA-256 check file, calculate the SHA-256 of the report file locally and compare it with the check value published on this page.
Are the security features exactly the same across platforms?
Not necessarily. System permissions, network interfaces and client versions are different. Specific functions should be subject to the current client, version description and audit scope of the corresponding platform.
Where can I view the technical design of the SingLink protocol?
The SingLink protocol technical white paper explains the control plane, data plane, connection life cycle, protocol boundaries and public evidence status.
Continuous disclosure of safety evidence
Security pages, technical white papers, audit reports, and update feeds will be continuously updated with real revision times. Important changes will be synchronized into the site map and security update feed.