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Security/Hacker

News linked to both this project and an event.

A smart money address purchased $1.1 million on Sweden defeating Tunisia in the World Cup group stage

According to monitoring by Odaily Seer Prophecy Channel, in the Polymarket prediction event for "2026 World Cup Group F Round 1: Sweden vs. Tunisia," a smart money address (0x8cb4ca5af7d9361322340bb307a828d288c91057) that has accumulated over $1 million in profit purchased more than $1.1 million on Sweden defeating Tunisia, with an average entry price of 51.7¢ and a position of 2,139,999.7 shares.The match between Sweden and Tunisia began today at 10:00. Sweden holds an advantage in overall strength and attacking power. The first half has concluded with Sweden leading Tunisia 2:1.Odaily Seer Prophecy Channel continues to monitor the prediction market, spotting changes before prices are set.

Polymarket launches "Zcash Orchard Privacy Pool Confirmed Vulnerable Exploit"

Odaily Seer monitoring shows that Polymarket has launched a new prediction event titled "Was Zcash's Orchard privacy pool confirmed to have been exploited?"On June 4, Zcash's core development team revealed that they had deployed an emergency network upgrade to fix a critical cryptographic vulnerability in the Orchard privacy pool. This flaw could have potentially allowed a malicious attacker to arbitrarily forge unlimited amounts of ZEC. Due to the vulnerability's characteristic that "it is impossible to cryptographically prove whether it was exploited in the past," independent support organization Shielded Labs subsequently proposed on June 5 to deploy a new privacy pool during the NU7 upgrade at the end of July. They also suggested implementing strict "Turnstile-accounting" audits for tokens exiting Orchard to investigate whether any forged tokens exist. According to the settlement rules for this prediction event, if before December 31, 2026, official sources or mainstream credible media confirm that the vulnerability was effectively exploited on the mainnet before being patched, the event will settle as YES.Odaily Seer continues to monitor prediction markets, seeing changes before pricing.

Polymarket: "Zcash will hit $100 in 2026" probability rises to 53%, up 36% in 24H

Odaily Seer Prophet Channel monitoring shows that the probability of "Zcash will hit $100 in 2026" on Polymarket has risen to 53%, a 24-hour increase of 36%.Market rules: If between 17:35 on November 24, 2025, and 23:59 on December 31, 2026 (Eastern Time), the lowest price (Low) of any 1-minute candlestick of the Binance ZEC/USDT trading pair reaches or falls below the price stated in the title, this market will immediately settle as "Yes"; otherwise, it will settle as "No." Settlement is based solely on the 1-minute candlestick data of the Binance ZEC/USDT trading pair; prices from other exchanges or trading pairs will not be considered.In previous news, the privacy coin Zcash disclosed and fixed a critical security vulnerability that could have been exploited by malicious miners to transfer over 25,000 ZEC (approximately $6.5 million) from the deprecated Sprout privacy pool. Officials stated that the vulnerability had existed since July 2020 but was not actually exploited, and user funds remained safe at all times. The development team has released version v6.12.0 to complete the fix, and major mining pools have already upgraded their deployments.Odaily Seer Prophet Channel continues to monitor prediction markets, seeing changes before pricing.

New address purchases $7,500 on Biden's son becoming 2028 Democratic presidential candidate, probability surges 3x

Odaily Seer Channel monitoring shows that a new address on Polymarket bought $7,500 on Hunter Biden becoming the 2028 Democratic presidential candidate, with an average purchase price of 0.7¢.Possibly influenced by this, multiple wallets followed suit with purchases, driving the probability from 0.7% up to the current 2.9%.It is reported that Hunter Biden is the second son of Joe Biden, the 46th President of the United States, and his only surviving son. Related controversies have persisted throughout Biden's entire presidency, becoming a core weapon for Republicans to attack the Biden administration over "corruption" and "cronyism."Odaily Seer Channel continuously monitors prediction markets, seeing changes before prices are set.

Polymarket: ZachXBT Reports Security Incident Related to Internal Operational Wallet Private Key Leakage; User Funds and Market Settlement Secure

Polymarket staff member Shantikiran Chanal posted on platform X, stating that they have taken note of the security reports related to reward distribution, and that user funds and market settlements remain safe. The investigation indicates that a private key leak occurred in a wallet used for internal operations, and the issue is not related to contracts or core infrastructure. Further updates will be provided.Previous report: ZachXBT stated that the Polymarket UMA CTF Adapter contract allegedly came under attack on Polygon, with over $520,000 having been drained.

ZachXBT: Polymarket’s UMA CTF Adapter contract疑似 attacked, over $520,000 stolen

According to on-chain investigator ZachXBT, Polymarket’s UMA CTF adapter on the Polygon network appears to have been attacked, resulting in losses exceeding $520,000 so far.

ZachXBT: PolyArb is a fake prediction market product equipped with a wallet stealer.

On-chain investigator ZachXBT replied that PolyArb is a fake prediction market product whose website contains a wallet-stealing script. Previously, PolyArb claimed on X that the Hyperliquid HIP-4 outcome market achieved $6.15 million in daily BTC trading volume within 48 hours. William LeGate, Head of User Growth, questioned its claims regarding Polymarket’s fee structure. ZachXBT warned that replying to the relevant account could generate further exposure and increase the number of potential victims.

Prediction market platform Polymarket疑似遭遇数据泄露,逾30万条记录及漏洞利用工具包外泄

According to Dark Web Informer, the decentralized prediction market platform Polymarket is suspected of having been hacked. The threat actor “xorcat” posted over 300,000 data records and a corresponding exploit toolkit on a well-known cybercrime forum. The data extraction occurred on April 27, 2026. Reportedly, the attacker extracted data via an undisclosed API endpoint, pagination bypasses, and misconfigured CORS settings in Polymarket Gamma and the CLOB API. The leaked data includes: - Full personal information for 10,000 users (including names, proxy wallets, and base addresses); - 4,111 comments; - 1,000 moderation reports (including 58 ETH addresses and administrator authentication address identifiers); - Metadata for 48,536 Gamma markets; - Constant-product market maker addresses for over 250,000 active CLOB markets; and - Social graph data for 9,000 followers. The toolkit contains proof-of-concept code for multiple vulnerabilities, including CVE-2025-62718 (Axios NO_PROXY bypass, CVSS 9.9, enabling server-side request forgery), CVE-2024-51479 (Next.js middleware authentication bypass, CVSS 7.5), and the aforementioned CORS misconfigurations. Additionally, the toolkit includes automated continuous data-extraction scripts and a comprehensive red-team report (including M

Polymarket Launches "When Will the Next Cryptocurrency Hack Exceeding $100 Million in Losses Occur"

Odaily Seer Channel monitoring shows that Polymarket has launched a new market: "When will the next cryptocurrency hack exceeding $100 million in losses occur". This market primarily references the Rekt News leaderboard as the adjudication source, and can also use publicly recognized reliable reports as a basis. Currently, this prediction market has set four time nodes: April 30, June 30, September 30, and December 31.The event contract rules are: This is a market regarding whether any crypto project or exchange suffers an attack or hack valued at a minimum of $100 million equivalent between the market creation and 11:59 PM Eastern Time on the date specified in the title. Otherwise, this market will ultimately resolve to "No". Hacks on decentralized exchanges and lending protocols will be counted.Odaily Seer Channel continues to monitor prediction markets, seeing changes before they are priced in.

An address deposited 978,000 ZRO tokens to Binance, valued at approximately $1.57 million.

According to on-chain analyst Yujin (@EmberCN), ZRO—the native token of LayerZero, the cross-chain bridge exploited by hackers in today’s rsETH vulnerability incident—fell 18% on the day, dropping from $1.90 to $1.50. Twenty minutes ago, a Polymarket user with the address “greenrooibos” deposited 978,000 ZRO tokens to Binance, valued at approximately $1.57 million. These ZRO tokens were withdrawn from Binance two weeks ago, when they were worth roughly $2.04 million; this deposit thus corresponds to a loss of approximately $470,000.

Multiple whale addresses sold off on-chain, causing AAVE to drop 15% in a single day.

According to on-chain analyst Yujin (@EmberCN), after the hacker borrowed a large amount of ETH from Aave by pledging illegally minted rsETH, multiple whale addresses sold AAVE on-chain, causing AAVE’s price to drop 15% that day. Among them, the Polymarket user “smaugvision” sold 20,015 AAVE at an average price of $102.9, worth approximately $2.06 million; address 0xFC5 sold 20,000 AAVE at an average price of $102.8, worth approximately $2.05 million; and address 0xA2E sold 19,665 AAVE at an average price of $99.2, worth approximately $1.95 million.