This story was originally published on HackerNoon at: https://hackernoon.com/exploiting-eip-7702-delegation-in-the-ethernaut-cashback-challenge-a-step-by-step-writeup.
How to exploit EIP-7702 delegation flaws: A deep dive into the Ethernaut Cashback challenge with bytecode hacks and storage attacks
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This story was written by: @hacker39947670. Learn more about this writer by checking @hacker39947670's about page, and for more stories, please visit hackernoon.com.

The Ethernaut Cashback challenge exploits flawed EIP-7702 delegation security. The contract's modifiers assume strict access controls, but have critical vulnerabilities: First exploit: Craft a contract with the Cashback address embedded in bytecode at the expected offset, bypassing the onlyDelegatedToCashback modifier. Jump over the address to execute normally. Call accrueCashback directly to gain max cashback for both currencies and one NFT. Second exploit: Use storage collision—delegate your EOA to a contract that writes to the same nonce slot, inject nonce = 9999, then re-delegate to Cashback and execute one final transaction to reach nonce 10,000 and mint a second NFT with your player address. Key lesson: Never store security-critical state in EOAs—delegation allows unrestricted storage manipulation across delegated contracts.Retry

This story was originally published on HackerNoon at: https://hackernoon.com/apex-fusion-connects-three-blockchain-architectures-what-this-means-for-defis-$100b-future.
Apex Fusion deploys bAP3X on Base, connecting UTXO and EVM architectures through tri-chain system targeting DeFi's expansion beyond $100B.
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Apex Fusion deployed bAP3X on Base through Skyline's Blade EVM infrastructure, connecting its tri-chain architecture (UTXO-based Vector, EVM-compatible Nexus, and Prime coordinator) to Coinbase's Layer 2 network. The implementation uses LayerZero's OFT standard to enable cross-chain transfers between fundamentally different blockchain execution models. Liquidity pools launched on Aerodrome ($8B monthly volume) and QuickSwap with Merkl incentives. The deployment creates pathways between Cardano's UTXO ecosystem and Base's $3.2B TVL, addressing DeFi's fragmentation across 40+ incompatible networks. Success depends on whether Cardano and Base communities generate sustained cross-chain transaction volume rather than one-time bridge activity. FINMA-guided token structure provides regulatory clarity but introduces complexity that may limit retail adoption. The infrastructure enables DeFi's potential return beyond $100B TVL through reunified liquidity, but market demand for cross-architecture interoperability remains unproven.

This story was originally published on HackerNoon at: https://hackernoon.com/how-falcon-finances-$2b-platform-just-added-its-first-non-dollar-sovereign-asset.
Falcon Finance integrates tokenized Mexican CETES through Etherfuse, adding sovereign yield beyond US Treasuries to its $2B+ stablecoin system
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Falcon Finance integrated tokenized Mexican government bills (CETES) as collateral for its USDf stablecoin, marking the first non-US sovereign asset in its $2B+ system. The move diversifies beyond US Treasuries through Etherfuse's Solana-based tokenization, targeting Mexico's $65B remittance market while introducing emerging market currency and political risk. Whether users value geographic diversification over US credit reliability remains untested.

This story was originally published on HackerNoon at: https://hackernoon.com/cardanos-14-hour-stress-test-how-the-network-took-a-hit-and-healed-itself.
This incident was an exception and highlighted areas where Cardano can improve while also demonstrating its strengths.
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Cardano suffered a 14 hour, self-repairing chain fork on November 21st, 2025. This is the largest degradation of service for Cardano in its 8 years of operation. A serialization bug caused a unidirectional soft-fork.

This story was originally published on HackerNoon at: https://hackernoon.com/the-new-crypto-coin-under-$004-creating-panic-buying-phase-6-at-98percent-and-rising.
Phase 6 is now 98% allocated, with the remaining 2% selling at an accelerating pace. Investors watching crypto prices today are now entering before the token mo
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Mutuum Finance is building a decentralized lending and borrowing protocol designed for actual financial use. Phase 6 is now 98% allocated, with the remaining 2% selling at an accelerating pace. Investors watching crypto prices today are now entering before the token moves closer to $0.06 launch value.

This story was originally published on HackerNoon at: https://hackernoon.com/avail-launches-nexus-mainnet-unifies-liquidity-across-ethereum-solana-evms.
The launch marks the first time Web3 has access to a coordinated, liquidity-aware crosschain network. “This is a usability shift toward making Web3 for the real
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Avail Nexus connects rollups, appchains, and dApps into one coordinated operational universe where liquidity, assets, and users move freely at scale. The launch marks the first time Web3 has access to a coordinated, liquidity-aware crosschain network. “This is a usability shift toward making Web3 for the real users of the next generation of consumer apps”, highlights Anurag Arjun, Co-Founder of Avail.

This story was originally published on HackerNoon at: https://hackernoon.com/bitcoins-november-2025-bloodbath-dissecting-the-perfect-storm-behind-the-$42000-crash.
Bitcoin has experienced one of its most dramatic corrections in recent history, plummeting over 33% from its October peak of $126,000.
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This story was written by: @sergey-baloyan. Learn more about this writer by checking @sergey-baloyan's about page, and for more stories, please visit hackernoon.com.

Bitcoin has experienced one of its most dramatic corrections in recent history, plummeting over 33% from its October peak of $126,000 to around $84,000 by November 21, 2025. This crash has wiped out all of Bitcoin's 2025 gains and represents a confluence of multiple bearish factors creating a perfect storm in the cryptocurrency markets.

This story was originally published on HackerNoon at: https://hackernoon.com/from-hypotheses-to-high-value-calls-how-juan-solares-scales-customer-insights-at-essential.
Solares's playbook suggests that systematic approaches to customer development function less as bureaucratic overhead and more as advantages for lean teams.
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This story was written by: @stevebeyatte. Learn more about this writer by checking @stevebeyatte's about page, and for more stories, please visit hackernoon.com.

Solares's playbook suggests that systematic approaches to customer development function less as bureaucratic overhead and more as competitive advantages for lean teams.