~$16M Lost: DxSale, SquidRouterModule & More | BlockSec Weekly

This weekly security report covers 5 notable attack incidents between May 25 and May 31, 2026, with combined losses of approximately $16M across BNB Chain, Ethereum, Base, Arbitrum, and Cosmos. Key incidents include the DxSale token locker exploit ($7.3M) involving three missing state updates compounded by a deployer key compromise, the SquidRouterModule exploit ($3.2M) caused by improper input validation in an Axelar Bridge integration that allowed forged cross-chain messages to drain 86 Safe wallets, and the Gravity Bridge signing key compromise ($5.4M). Other incidents involve a compromised deployer key (Stake DAO, $91K) and a vulnerable off-chain bridge backend (Alephium, $300K).

Newsletter - May 2026

In May 2026, the DeFi ecosystem experienced three major security incidents. Echo Protocol lost ~$76.7M due to an administrator key compromise that enabled unauthorized minting of unbacked eBTC on Monad, StablR suffered ~$12.8M from a multisig governance breach leading to unauthorized stablecoin issuance, and the Verus-Ethereum Bridge incurred ~$11.7M following a type-validation failure that allowed a crafted supplemental export to be misclassified as a valid primary export.

Crypto Compliance Software Guide: Technical Frameworks & Top Tools

FATF, MiCA, OFAC—three regulators, one question every VASP must answer: is your compliance stack built for the next audit, or the last one?

How to Choose a Blockchain Compliance Platform Suitable for Your Business

For every 10,000 USDT moving on-chain, roughly 13 USDT are tainted. The platform you choose decides whether that contamination touches your books.

Crypto Compliance Tools: A Practical Guide for Web3 and TradFi Integration

Regulators levied $4.2B in penalties in 2024 alone. For Web3 and TradFi teams, choosing the right compliance stack is no longer optional.

~$104.6M Lost: Verus, RetoSwap & More | BlockSec Weekly

This BlockSec weekly security report covers 5 notable attack incidents identified between May 18 and May 24, 2026, with total estimated losses of approximately $104.6M. Two incidents are analyzed in detail: the highlighted $11.7M Verus-Ethereum Bridge exploit, where a type-validation failure allowed a handcrafted supplemental export output to be misclassified as a valid primary export; and the $2.7M RetoSwap exploit on Monero, where a protocol-level authentication flaw in the P2P trade flow allowed an attacker to hijack the arbitrator role via a forged ACK message. Three additional key compromise incidents (EchoProtocol, Polymarket, StablR) accounted for ~$90.2M.

~$4.72M Lost: TAC, Transit Finance & More | BlockSec Weekly

This BlockSec weekly security report covers 3 notable attack incidents identified between May 11 and May 17, 2026, across TRON, TON, and Ethereum, with total estimated losses of approximately $4.72M. Three incidents are analyzed in detail: the highlighted $1.88M Transit Finance exploit on TRON, where a deprecated swap bridge contract with lingering token approvals was exploited through arbitrary calldata forwarding; the $2.8M TAC TON-to-EVM bridge exploit caused by missing canonical wallet verification in the jetton deposit flow; and the $46.75K Boost Hook exploit on Ethereum, where spot price manipulation on a Uniswap V4 hook-based perpetual protocol forced the protocol to buy tokens at inflated prices using its own reserves.

~$15.9M Lost: Trusted Volumes, Wasabi & More | BlockSec Weekly

This BlockSec bi-weekly security report covers 11 notable attack incidents identified between April 27 and May 10, 2026, across Sui, Ethereum, BNB Chain, Base, Blast, and Berachain, with total estimated losses of approximately $15.9M. Three incidents are analyzed in detail: the highlighted $1.14M Aftermath Finance exploit on Sui, where a signed/unsigned semantic mismatch in the builder-fee validation allowed an attacker to inject a negative fee that was converted into positive collateral during settlement; the $5.87M Trusted Volumes RFQ authorization mismatch on Ethereum; and the $5.7M Wasabi Protocol infrastructure-to-contract-control compromise across multiple EVM chains.

Newsletter - April 2026

In April 2026, the DeFi ecosystem experienced three major security incidents. KelpDAO lost ~$290M due to an insecure 1-of-1 DVN bridge configuration exploited via RPC infrastructure compromise, Drift Protocol suffered ~$285M from a multisig governance takeover leveraging Solana's durable nonce mechanism, and Rhea Finance incurred ~$18.4M following a business logic flaw in its margin-trading module that allowed circular swap path manipulatio

~$7.04M Lost: GiddyDefi, Volo Vault & More | BlockSec Weekly

This BlockSec weekly security report covers eight attack incidents detected between April 20 and April 26, 2026, across Ethereum, Avalanche, Sui, Base, HyperLiquid, and MegaETH, with total estimated losses of approximately $7.04M. The highlighted incident is the $1.3M GiddyDefi exploit, where the attacker did not break any cryptography or use a flash loan but simply replayed an existing on-chain EIP-712 signature with the unsigned `aggregator` and `fromToken` fields swapped out for a malicious contract, demonstrating how partial signature coverage turns any historical signature into a generic permit. Other incidents include a $3.5M Volo Vault operator key compromise on Sui, a $1.5M Purrlend privileged-role takeover, a $413K SingularityFinance oracle misconfiguration, a $142.7K Scallop cross-pool index injection, a $72.35K Kipseli Router decimal mismatch, a $50.7K REVLoans (Juicebox) accounting pollution, and a $64K Custom Rebalancer arbitrary-call exploit.

Weekly Web3 Security Incident Roundup | Apr 13 – Apr 19, 2026

This BlockSec weekly security report covers four attack incidents detected between April 13 and April 19, 2026, across multiple chains such as Ethereum, Unichain, Arbitrum, and NEAR, with total estimated losses of approximately $310M. The highlighted incident is the $290M KelpDAO rsETH bridge exploit, where an attacker poisoned the RPC infrastructure of the sole LayerZero DVN to fabricate a cross-chain message, triggering a cascading WETH freeze across five chains and an Arbitrum Security Council forced state transition that raises questions about the actual trust boundaries of decentralized systems. Other incidents include a $242K MMR proof forgery on Hyperbridge, a $1.5M signed integer abuse on Dango, and an $18.4M circular swap path exploit on Rhea Finance's Burrowland protocol.

The Decentralization Dilemma: Cascading Risk and Emergency Power in the KelpDAO Crisis

This BlockSec deep-dive analyzes the KelpDAO $290M rsETH cross-chain bridge exploit (April 18, 2026), attributed to the Lazarus Group, tracing a causal chain across three layers: how a single-point DVN dependency enabled the attack, how DeFi composability cascaded the damage through Aave V3 lending markets to freeze WETH liquidity exceeding $6.7B across Ethereum, Arbitrum, Base, Mantle, and Linea, and how the crisis forced decentralized governance to exercise centralized emergency powers. The article examines three parameters that shaped the cascade's severity (LTV, pool depth, and cross-chain deployment count) and provides an exclusive technical breakdown of Arbitrum Security Council's forced state transition, an atomic contract upgrade that moved 30,766 ETH without the holder's signature.