What Happened
On April 13, 2026, a security breach occurred in the Hyperbridge, a connection between the Polkadot and Ethereum networks. A hacker found a weakness that let them take control of the DOT token contract on Ethereum. They then used this control to create a billion new DOT tokens and quickly sold them, flooding the market.
The most concerning part of this situation is *when* it happened. Just six weeks before this issue came to light, the Polkadot community had officially limited the total supply of DOT tokens to 2.1 billion through a community vote. This was done to strengthen DOT’s value – especially since it had just been approved for its first spot ETF on the Nasdaq – by creating a sense of limited availability.
BRIDGED POLKADOT JUST GOT EXPLOITED
A hacker took advantage of a connection between systems to create 1 billion DOT tokens on the Ethereum network. They then quickly sold these tokens, taking away more than $240,000 worth of ETH in a series of transactions.
Track the attacker on Arkham using the link below:
— Arkham (@arkham)
As reported by Yahoo Finance, a loophole allowed the creation of tokens equaling almost half of Polkadot’s limited total supply in just one transaction. This happened because a flaw in the system meant the intended scarcity mechanism didn’t work – a contract operating on a separate network successfully bypassed it.
The core Polkadot network wasn’t impacted by the issue. The total amount of DOT that can ever exist on Polkadot remains unchanged. The problem only affected DOT tokens that were moved to Ethereum, but for those who held those tokens, the technicality of where the issue occurred doesn’t really matter.
Current Status
Security companies PeckShield and CertiK have identified an exploit and are monitoring the 108.2 ETH stolen by the attacker. Following this, Upbit immediately stopped all deposits and withdrawals of DOT, indicating that the wider industry views the affected asset as compromised, even before official confirmation from the Polkadot team.
Work is being done to stop the recent unauthorized creation of tokens on the Hyperbridge contract. Until a safer contract is available, users should avoid using DOT that has been transferred to Ethereum through Hyperbridge. Currently, neither the Web3 Foundation nor the Hyperbridge team has officially commented on the situation.
The Liquidity Number That Tells the Whole Story
The way the exploit worked reveals how the incident unfolded. The $237,000 loss shows the real impact on the market.
The attacker created tokens valued at around $1.1 billion (based on previous prices) and then exchanged them for 108.2 ETH, which was about $237,000. The huge difference between these two amounts highlights how little actual liquidity existed for DOT tokens on Ethereum. The attacker was able to sell $1.1 billion worth of tokens into pools that only held around $237,000 before the price dramatically fell to almost zero. This demonstrates the limited funds available in those trading pools.
The version of DOT available on Ethereum didn’t actually have $1.1 billion worth of buyers and sellers. The real amount was only $237,000. The higher price was based on the idea that you could exchange this DOT for regular DOT, but when that stopped being true, the price immediately dropped to reflect the actual, much lower, trading volume.
If the stated value wasn’t genuine, paying back those who hold it would involve replacing something that was never truly supported by assets, and the treasury simply doesn’t have the resources to do so, even if the community desired it.
The Reimbursement Problem
People who recently supported limiting the money supply are now being asked to support increasing it by 48% to pay for a bridge they didn’t create. This creates a difficult conflict with no easy answer, and any plan to cover the costs will need to address it directly.
The Polkadot Treasury has around 44 million DOT available, but the recent exploit involved a much larger amount – 1 billion DOT, which is over 22 times the treasury’s holdings. Because of this, it’s impossible to fully cover the losses using only the funds in the treasury. Providing significant compensation would require either creating new DOT tokens – which would go against the recent decision to limit the total supply – or taking an extraordinary and previously unused action with the Polkadot protocol.
Any proposal will need to go through Polkadot’s official governance process, called OpenGov, using either the Big Spender or Wish for Change method. This involves a few steps: a waiting period before voting starts, a voting system where holding more tokens gives you more say, and a delay before any changes actually happen. This system is built for careful consideration and isn’t meant for quickly addressing large-scale emergencies.
Full repayment isn’t expected. Instead, those liquidity providers most impacted by the issue will likely receive partial compensation. This will be funded by available treasury funds – as long as doing so doesn’t cause inflation – and by holding the Hyperbridge team, who created and managed the compromised contract, accountable.
The recent issue wasn’t caused by Polkadot’s core governance, but by the bridge itself. It’s important to remember this when the community discusses how to address it.
The limit on supply held up during the attack, but the bridge connecting systems was destroyed. Unfortunately, there aren’t enough funds available to make up for the losses.
This article is for informational purposes only and shouldn’t be taken as financial, investment, or trading advice. Coindoo.com doesn’t support or suggest any particular investment or cryptocurrency. Before making any investment choices, be sure to do your own research and talk to a qualified financial advisor.
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2026-04-13 10:40