Chain-Fox Platform is now LIVE. Early access testing is officially open. You can now run automated security scans on your GitHub repo or blockchain project using our new detection engine. 🔗 Test it here: https://t.co/MsOJkCM3eU (Testing server. Migrates to

As the year winds down, it’s a good moment to slow things down and focus on building things right. Security doesn’t benefit from rushing, and neither do the teams behind it. We’ll keep sharing updates as work continues.

One thing we’ve learned from reviewing real-world contracts: most critical issues aren’t complex hacks. They’re small logic decisions that become irreversible once deployed. This is why careful review matters more than speed.

x402 integration is currently in the final stages on devnet. Additional work is being done to ensure robustness and avoid edge cases before wider availability. We’ll share more once it’s ready to be opened up further.

Reminder: the old CFX contract is not associated with the current Chain-Fox team. Please verify contract addresses carefully and avoid interacting with legacy or unrelated tokens. The only official CFX contract under active team control is:

Quick clarification on the chain-fox platform x402 questions. x402 hasn’t been abandoned. There was an attempt to deploy last weekend, but with x402 now at v2, the integration needs to be reassessed before moving forward. Rather than rushing an outdated implementation, we’re

Recommended mitigation: • Introduce multisig controls • Add timelocks for sensitive changes • Consider progressive decentralization of governance This concludes the Chain-Fox audit breakdown for Vistara-Labs/b402. More reports coming.

Informational Issue: Centralized Control File: contracts/B402Token.sol The owner currently has full control over critical functions, including: • Reward rates • Emergency withdrawals • Referral logic • Protocol behavior This creates trust and governance risk.

Race condition impact + fix Impact: • Legitimate users can lose referral bonuses forever • Issue occurs due to latency between backend calls Recommended fix: • Allow referral assignment even after payment count increases or • Pass referrer directly into claimReward to

Medium Issue: Race Condition in Referral Logic File: contracts/B402Token.sol Referral bonuses depend on the order of backend calls. If payment processing happens before referral registration, users permanently lose referral rewards. This is a timing and execution order issue

Recommended fix: Mint reward allocations directly to the contract itself and distribute rewards from address(this) instead of the owner wallet. This removes the need for a hot wallet and significantly reduces operational and security risk.

Medium Issue: Hot Wallet Risk File: contracts/B402Token.sol The current reward distribution design requires the owner’s wallet to stay online and sign transactions continuously. Risks identified: • Single point of failure • Compromised server could lead to full token supply

Audit summary for b402: • Medium severity issues: 2 • Informational issues: 1 Note: Earlier vulnerabilities in B402Relayer.sol were already addressed in B402RelayerV2.sol. This report focuses on remaining risks in B402Token.sol.

🧵 Chain-Fox Free Auto Audit Report on Vistara-Labs/b402 Repo: https://t.co/hYEPYAaOJx Our automated audit detected several issues related to wallet security, execution order, and centralized control. We’ll break down the key findings below for clarity and transparency.

Post-mortem analysis for ACE incident The ACE incident wasn’t a technical exploit. It was classic phishing. The attacker tracked ACE’s website migration, sent a fake "official" X email, and linked to a perfect clone of the real X login page. After stealing credentials, they

With Phase 1 testing completed, we are preparing to open Phase 2, which expands access and introduces additional improvements across our scanning pipeline. Chain-Fox is focused on giving developers, founders and communities fast, reliable visibility into their codebase as the

Chain-Fox delivers advanced automated security analysis built to surface patterns that deserve developer attention. Final confirmation always rests with project maintainers, who hold full context of their architecture and implementation.

Low Level Findings: Unused Variables and Imports Three low level findings involved unused variables and imports across both client and server files. They may seem minor, but they often point to sections that can be tightened or cleaned up. Removing these reduces noise in the

Medium Level Findings: Missing Null Checks Our tools detected two medium level issues related to missing null checks in UI components. These patterns can lead to unexpected behavior or runtime errors if the affected paths are triggered. Highlighting them early helps teams keep

Chain-Fox Free Audit Report: x402HyperLayer SDK This audit was conducted on a repository submitted through Chain-Fox’s early access pipeline. The results reflect preliminary automated detection outputs designed to give developers a clear look at areas that may require technical

Low-severity findings in ncameiri/validate_protocol Alongside the high-risk issues, our system also flagged multiple low-severity items that affect code quality: • Unused variables (params, start) • Unused async promises • Unused requestCache map • Unused nodeStats map •