The H Token Private Key Leak Incident: A Full Account
On June 9, 2026, Humanity Protocol, a decentralized identity protocol, suffered a devastating private key leak attack involving its native token, H Token. This incident led to a sharp drop in H Token's value and sparked widespread concerns about the security of crypto assets. According to Terence Kwok, founder of Humanity Protocol, the attackers successfully compromised the private keys of Humanity Foundation members, gaining control over at least 17 related wallets and stealing assets from them.
After gaining access, the attackers quickly converted the stolen H Tokens into other mainstream cryptocurrencies such as Ethereum (ETH). Furthermore, the attackers minted an additional 100 million H Tokens on the BNB Chain and immediately sold them, significantly increasing selling pressure and further exacerbating the H Token's price decline.
Dramatic Price and Market Cap Fluctuations
The private key leak attack had a devastating impact on H Token's market performance. In a short period, the H Token price plummeted by over 80%, with some reports even indicating an on-chain price drop of nearly 99.9%. Specifically, H Token's price fell from a pre-attack range of approximately $0.67 to $0.78, hitting a low of $0.05 before stabilizing around $0.12 to $0.13. On the BNB Chain, the H Token price even dropped to approximately $0.0009, with its liquidity pool shrinking to only about $13.
On-chain analysis indicates that over $30 million in assets were stolen in this attack, with specific data pointing to approximately $32 million. Of this, about $23.7 million in stolen assets were converted to ETH, while approximately $7.9 million remained in H Token form. The attackers obtained about 18,510 ETH (worth approximately $30.83 million) and 1,548 BNB (worth approximately $924,000) through the sell-off. Shortly after the incident, the attackers still held about 111 million H Tokens, valued at approximately $14 million at the time. As a result, Humanity Protocol's market capitalization plummeted from about $2 billion to approximately $35.7 million.
Project Team's Response and Market Scrutiny
Following the incident, Humanity Protocol founder Terence Kwok quickly confirmed the private key leak and advised users to temporarily avoid interacting with the project's cross-chain bridge or liquidity pools to prevent further losses. The project team stated that they are working with cybersecurity experts and major cryptocurrency exchanges to address the security vulnerability.
However, the incident also raised questions from the community and on-chain analysts. On-chain analyst Specter was among the first to raise the alarm, noting that over 17 wallets holding H Tokens had been compromised. Renowned on-chain detective ZachXBT questioned the project team's explanation, suggesting that the security vulnerability "might be a self-inflicted drama" and accusing the team of aggressively promoting the token despite its lack of real value. These doubts exacerbated the market's trust crisis in Humanity Protocol.
Growing Challenges in Crypto Industry Private Key Security
The Humanity Protocol private key leak is not an isolated incident; it once again highlights the critical security challenges faced by decentralized identity platforms and the broader cryptocurrency sector. This incident also reflects the increasing trend of private key leak attacks in the cryptocurrency space in 2026, which have surpassed smart contract vulnerabilities to become one of the primary attack methods. Previously, Humanity Protocol completed two funding rounds in 2024 and 2025, totaling $50 million, including a $30 million seed round at a $1 billion valuation, and another $20 million round in January 2025 at an $1.1 billion valuation, demonstrating its prior prominence in the industry.
This incident serves as a wake-up call for cryptocurrency users, reminding investors to fully understand the security mechanisms and potential risks of any project they participate in. For project teams, strengthening internal security management and adopting measures such as multi-signature and hardware security modules to protect core assets and user funds are crucial for maintaining project credibility and sustainable development.
