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Holistic Security for DeFi Securing Your Smart Contracts

Secure your code pre-launch and block attacks in real-time. Safeguard both user assets and your reputation.

PRE-LAUNCH
Build on a Secure Foundation

Find and fix critical issues in your smart contracts before you launch.

Make sure your business logic is sound and free of flaws.

Launch with assurance through a top-tier BlockSec Audit

POST-LAUNCH
Detect Threats Before Impact

Always monitor mempool and on-chain transactions for suspicious activities.

Receive instant alerts on new threats such as oracle manipulation and flash loan attacks.

Use our Phalcon Security to detect and prevent attacks.

ACTIVE THREAT
Block Attacks Automatically

Block confirmed exploits in real-time to prevent them from draining funds.

Start on-chain responses, such as pausing contracts, to neutralize active threats.

Deploy white-hat counter transactions to rescue at-risk assets by using Phalcon Security

DEEP INSIGHTS
Forensic Research & Threat Intelligence

Leverage Phalcon Explorer to conduct Root Cause Analysis (RCA) and MetaSleuth to trace malicious funds.

Understand complex attack vectors to gain actionable intelligence. Help you proactively harden your protocol against emerging threats.

Visit our Security Incident Library to learn more about historical attacks.

Secure Your Protocol Across Its Entire Lifecycle

Achieve end-to-end protocol security across the entire lifecycle. We integrate rigorous pre-launch audits for code integrity with Phalcon's proactive post-launch threat intelligence and prevention, ensuring continuous defense of user assets.

phalcon security

Partnering with BlockSec has been crucial to Tokenlon's mission of preserving the openness of DeFi while leveraging technology to create a safer, more trustworthy space for all. BlockSec's cutting-edge on-chain analytics allow us to identify high-risk addresses across multiple blockchains and navigate complex global regulations with confidence. Their expertise helps us safeguard our liquidity partners and consistently deliver a seamless, reliable DeFi experience for genuine users.

Randy
Randy
TOKENLON Sr.PM
Read Next
Weekly Web3 Security Incident Roundup | Mar 30 – Apr 5, 2026

Weekly Web3 Security Incident Roundup | Mar 30 – Apr 5, 2026

This BlockSec weekly security report covers nine DeFi attack incidents detected between March 30 and April 5, 2026, across Solana, BNB Chain, Arbitrum, and Polygon, with total estimated losses of approximately $287M. The week was dominated by the $285.3M Drift Protocol exploit on Solana, where attackers combined multisig signer social engineering with Solana's durable nonce mechanism to bypass a zero-timelock 2-of-5 Security Council, alongside notable incidents including a $950K flash loan TWAP manipulation against the LML staking protocol, a $359K Silo Finance vault inflation via an external `wstUSR` market donation exploiting a depegged-asset oracle and `totalAssets()` accounting flaw, and an EIP-7702 delegated-code access control failure. The report provides detailed vulnerability analysis and attack transaction breakdowns for each incident, covering flawed business logic, access control, price manipulation, phishing, and misconfiguration attack types.

Tracing $1.6B in TRON USDT: Inside the VerilyHK Ponzi Infrastructure

Tracing $1.6B in TRON USDT: Inside the VerilyHK Ponzi Infrastructure

An on-chain investigation into VerilyHK, a fraudulent platform that moved $1.6B in TRON USDT through a multi-layered fund-routing infrastructure of rotating wallets, paired payout channels, and exchange exit funnels, with traced connections to the FinCEN-sanctioned Huione Group.

Drift Protocol Incident: Multisig Governance Compromise via Durable Nonce Exploitation

Drift Protocol Incident: Multisig Governance Compromise via Durable Nonce Exploitation

On April 1, 2026 (UTC), Drift Protocol on Solana suffered a $285.3M loss after an attacker exploited Solana's durable nonce mechanism to delay the execution of phished multisig approvals, ultimately transferring administrative control of the protocol's 2-of-5 Squads governance with zero timelock. With full admin privileges, the attacker created a malicious collateral market (CVT), inflated its oracle price, relaxed withdrawal protections, and drained USDC, JLP, SOL, cbBTC, and other assets through 31 rapid withdrawals in approximately 12 minutes. This incident highlights how durable nonce-based delayed execution can decouple signer intent from on-chain execution, bypassing the temporal assumptions that multisig security implicitly relies on.

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Kava
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ApeX
Tectonic
Burrow
Alpaca Finance
Meta Pool
Izumi
Mage Finance
bitget
yei finance
Uniswap Foundation
Compound Finance
Radiant
FBTC
Magpie
Telcoin
Bybit
EOS Network Foundation
1intro
Kava
EVMOS
ApeX
Tectonic
Burrow
Alpaca Finance
Meta Pool
Izumi
Mage Finance
bitget
yei finance
Uniswap Foundation
Compound Finance
Radiant
FBTC
Magpie
Telcoin
Bybit
EOS Network Foundation
1intro
Kava
EVMOS
ApeX
Tectonic
Burrow
Alpaca Finance
Meta Pool
Izumi
Mage Finance
bitget
yei finance
Puffer
Pancakeswap
Mantle
Prisma
Polygon ZKEVM
Cobo
crypto.com
Polyhedra Network
Filecoin
NEAR Foundation
Stader
Amber
LiNEAR
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VVS Finance
Aurora
Lista DAO
okx
megaeth
Puffer
Pancakeswap
Mantle
Prisma
Polygon ZKEVM
Cobo
crypto.com
Polyhedra Network
Filecoin
NEAR Foundation
Stader
Amber
LiNEAR
Matrixport
VVS Finance
Aurora
Lista DAO
okx
megaeth
Puffer
Pancakeswap
Mantle
Prisma
Polygon ZKEVM
Cobo
crypto.com
Polyhedra Network
Filecoin
NEAR Foundation
Stader
Amber
LiNEAR
Matrixport
VVS Finance
Aurora
Lista DAO
okx
megaeth
Puffer
Pancakeswap
Mantle
Prisma
Polygon ZKEVM
Cobo
crypto.com
Polyhedra Network
Filecoin
NEAR Foundation
Stader
Amber
LiNEAR
Matrixport
VVS Finance
Aurora
Lista DAO
okx
megaeth

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