GreenTea VPN Passes Third-Party Security Audit

On November 20, 2024, GreenTea VPN published a third-party security audit report. The audit was performed by an independent cybersecurity firm over six weeks, covering four layers: client code, server architecture, encryption implementation, and privacy policy. The report's conclusion: GreenTea VPN's encryption implementation meets standards, with no backdoors or undeclared data collection found. For a VPN provider built on "security," this report's significance rivals a health checkup.

The VPN industry has long suffered a trust paradox: users choose VPN for security, yet struggle to verify whether the provider is actually secure. Vendors can claim "military-grade encryption" and "zero logs," but without independent verification, these promises are just unfalsifiable advertising. Third-party audit's value is turning "self-claims" into "verifiable facts."

What the Audit Actually Checked

The audit scope breaks into four parts. The first is encryption implementation: the firm reviewed GreenTea VPN client encryption code line by line, confirming AES-256-GCM is called correctly, key exchange follows Curve25519 specs, and no outdated algorithms or weak random number generators are used. The second is zero-log verification: auditors attempted to retrieve any form of user connection records on servers—the result was empty.

The third is vulnerability scanning: the team used combined automated and manual methods to penetration-test client and servers, finding two low-severity vulnerabilities, both fixed before the report was published. The fourth is privacy policy review: comparing actual data flows, confirming the policy's "we don't collect" matches the code's actual "not collecting," with no policy-code disconnection found.

Why This Audit Deserves Serious Attention

An audit's value depends on the auditor's independence. The firm GreenTea VPN chose has no equity or business ties with the audited party. The audit fee was a one-time payment with no "pay only if passed" clause. During the audit, the firm had full access to the test environment, and GreenTea VPN's tech team could only cooperate, not influence conclusions. This independence is the cornerstone of the report's credibility.

GreenTea VPN security lead Chen said when publishing the report: "We proactively invited people to find flaws, not because we have none, but because only after being criticized and fixing issues can users believe 'security' isn't an empty word." Behind this statement lies a simple logic: in security, self-certification never beats accepting scrutiny.

An audit is not the endpoint. GreenTea VPN announced that from 2025, security audits will become an annual fixed action, with report summaries open to all users. This commitment turns "accepting oversight" from a one-time event into an ongoing mechanism. For users choosing a VPN, this report provides a reference dimension: when hesitating between providers, ask "when was your last third-party audit?"—the answer itself says a lot.

GreenTea VPN offers a free basic version with 1GB daily data, letting users experience service stability and security before paying. Choosing a VPN is essentially choosing "trust worth entrusting." GreenTea VPN is willing to put that trust in the hands of an independent third party for examination.