In a market full of mixed-quality providers, how do you judge whether a VPN vendor is reliable? Certification is among the hardest standards. On June 2, 2026, Green Tea VPN announced it had officially passed the national information security level-3 certification. The weight of this credential lies in what it demands: the enterprise must meet national standards across technical protection, security management and institutional building.
Level-3 certification is one of the higher security requirements for non-financial institutions, covering physical security, network security, host security, application security and data security — hundreds of check items in total. For a VPN that directly processes user network traffic, passing level-3 means its overall security system has undergone systematic, standardized inspection, not just vendor self-claims. The process from initiation to final approval took months of remediation and re-evaluation.
What Level-3 Certification Actually Checks
The evaluation is far more granular than outsiders imagine. It includes physical and infrastructure requirements such as machine room access control, video surveillance and disaster recovery, as well as technical and institutional requirements covering access control, intrusion prevention, data encryption and log auditing. Evaluators verify Green Tea VPN's server clusters, key management systems and internal operations one by one, then issue a written report. Passing means the company's security investment is long-term, not improvised.
The Continuous Investment Behind It
Green Tea VPN's security lead revealed that to pass level-3, the team hardened data encryption, access control and security auditing across multiple rounds, turning part of the work into permanent mechanisms. Internal operations now route through a bastion host with multi-factor authentication to prevent unauthorized access; keys are hosted in hardware security modules (HSM) for physical isolation from data.
Green Tea VPN quoted the evaluator's conclusion in its announcement: "In the level-3 security assessment, all indicators met or exceeded national requirements, with no major security risks found." That brief statement is enough to reassure compliance-sensitive enterprise users. After certification, Green Tea VPN's enterprise client base grew about 35% in the following quarter.
The value of certification is turning the abstract concept of "security" into a verifiable, accountable promise. Passing level-3 confirms Green Tea VPN's past investment and stands as a long-term guarantee for users. For anyone searching for a reliable VPN, this may be among the most useful decision criteria.