The group claims they are being discriminated against because they are liquidity providers for rival coins.
A group calling itself “Victims of Ankr Exploit” have claimed that its members lost over 13,000 BNB liquid staking coins (over $4 million worth at the time of writing) as a result of the Dec. 2 Ankr exploit, but have not been adequately reimbursed by the Ankr company.
According to a Jan. 19 statement from the group received by Cointelegraph, affected members alleged that they have only received half of the amount they lost. The group has called on Binance CEO Chanpeng “CZ” Zhao to put pressure on Ankr to get the funds released.
Ankr COO Ryan Fang responded to the allegations in a Telegram conversation with Cointelegraph. He stated that both the Stader and pSTAKE teams agreed to a 50% reimbursement plan. “This amount is basically signed off by projects,” he said. “We did basically what affected project asked us to do.”
Stader Labs has denied making the agreement with Ankr, stating that "we could not reach an agreement & Ankr has unilaterally decided to move forward with a 50% refund to BNBx LP holders."
At the time of publication, Cointelegraph was not able to independently confirm whether this agreement had been signed by all parties.
1/4 We, the victims of Ankr exploit, are increasing the reward from 100 BNB to 110 BNB (worth $28700 currently) for the person (including influencers and media) that:— Alex Soh (@AlexSoh14) January 7, 2023
✅ helps @cz_binance to understand the unfair compensation AND;
✅ makes @ankr to compensate us 100% https://t.co/sZlkqGW58a
The group specifically claimed that a reimbursement plan posted by Ankr on Dec. 20 has been unfair to liquidity providers at Wombat exchange. Under this plan, Ankr proposed to “partially cover the loss of stkBNB liquidity providers on Wombat.” Ankr argued that a full reimbursement would be unfair because “the nature of the mixed liquidity pools” on Wombat made it hard to determine how much liquidity providers had lost.
The Ankr exploit victim group admitted that Ankr compensated them with 50% of the BNB lost in the attack, but insisted that it should have compensated them 100%.
The group argued that Ankr has refused to compensate them fully because the stkBNB and BNBx liquid staking tokens lost were competitors to Ankr’s own ankrBNB tokens:
“It is obvious that there is a segregation and discrimination of victims that is unjustifiable. And [a] fact that out of X protocols impacted, only two of them (Stader and pSTAKE), direct competitors of Ankr, see their users discriminated as victims.”
Citing a tweet from noted blockchain sleuth ZachXBT, they argued that Ankr has the ability to compensate them fully because it recovered 1,559 ETH (approximately $2.4 million worth at the time of writing) from Huobi Global after the attacker tried to use it to cash out.
The Ankr BNB staking protocol was hacked on Dec. 2, and the attacker was able to obtain $5 million in crypto from the attack. On Dec. 21, the company announced that the attack had been carried out by an ex-employee. In the same announcement, it vowed to shore up its security practices and reimburse victims.
This article was updated on January 26, 2023 to include comments and clarifications by Ankr COO Ryan Fang and by a representative of Stader Labs.
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