# Fund Custody & Risk Management Aster partners with [Ceffu](https://www.ceffu.com/) for the custody of USDF and underlying USDT funds, and to prepare funds for yield strategy execution on behalf of asUSDF holders. ### **How Ceffu Ensures Safe Custody** Ceffu provides institutional-grade crypto asset management solutions with a focus on security and advanced technology. Their custody services include: * Cold storage for offline asset protection * Off-exchange settlement to reduce counterparty exposure * Multi-party computation (MPC) and multi-signature wallets for distributed key management * Private key encryption secured in hardware devices or cryptographic vaults * Custom governance controls and institutional-grade security measures Ceffu's solutions meet rigorous institutional standards and compliance requirements, making them a trusted custodian for digital assets. ### **MirrorX: Capital Deployment with Security** Ceffu's MirrorX solution is key to generating staked USDF (asUSDF) yields. MirrorX allows Aster to deploy capital on Binance instantly while keeping assets in Ceffu's independent custody. **How it works:** * Maintains a 1:1 balance delegation from Ceffu to a Binance sub-account * Assets always remain in Ceffu's custody (not on Binance) * Trades settle off-exchange, minimizing counterparty risk * Withdrawals settle on T+1 basis This structure combines deep exchange liquidity with institutional-grade security. The Aster-Ceffu account executes the delta-neutral strategy by buying spot assets on Binance while shorting corresponding perpetual contracts to maintain balanced positions. ### Audit Before deploying any asset, Aster conducts rigorous evaluation to assess market fit and potential risks. All smart contracts are audited by reputable security firms, and Aster maintains a robust risk monitoring system. **USDF Audit report** {% content-ref url="../../overview/audit-reports" %} [audit-reports](https://docs.asterdex.com/overview/audit-reports) {% endcontent-ref %} {% file src="" %} ### **Risk Factors** Understanding potential risks helps you make informed decisions. USDF faces both general stablecoin risks and those specific to yield-bearing assets. #### **Smart Contract Risk** **What it is:** The potential for malicious actors to exploit loopholes in smart contracts. **Mitigation:** Aster engages reputable security firms for audits and maintains robust risk monitoring. Aster works with security and blockchain partners to stay current with the latest DeFi security developments and liaises regularly with risk monitoring teams. #### **Underlying Asset Risk** **What it is:** USDT, which backs USDF, carries its own risks–most notably the possibility of depeg and reserve backing concerns. **Mitigation:** You can review current USDT balances, reports, and reserves at [Tether's transparency dashboard](https://tether.to/en/transparency/?tab=usdt). #### **Custodial Partner Risk** **What it is:** Potential failure of operations at Ceffu, such as accessibility issues, inability to process transactions, or failure to settle positions regularly. There's also risk if Ceffu fails compliance, security, or data privacy standards. **Mitigation:** Ceffu holds [ISO 27001 and 27701 certifications](https://www.ceffu.com/blog/ceffus-solution-receives-iso-27001-and-iso-27701-certification) and is [SOC 2 Type 1 & 2 compliant](https://www.ceffu.com/blog/upholding-trust-and-safety-ceffu-renews-soc-2-attestation), meaning auditors have independently verified their cybersecurity and privacy controls. [Ceffu is also part of the Global Travel Rule (GTR) Alliance](https://www.ceffu.com/blog/ceffu_joins_global-travel_rule_alliance_digital_asset_compliance) to comply with FATF Recommendation 16. Aster actively monitors for custodial partner risks and is prepared to react quickly if issues arise. #### **Exchange Partner Risk** **What it is:** If Binance becomes insolvent, delta-neutral positions would become ineffective, impacting yield generation. **Mitigation:** Aster proactively monitors exchange partner status and is prepared to respond quickly to any issues. #### **Funding Risk** **What it is:** Perpetual shorts in the delta-neutral strategy earn funding fees. Consistently negative funding rates require the Aster account to pay more fees, reducing asUSDF APY. **How it works:** Funding rates fluctuate, especially during market volatility. While negative rates directly reduce APY, perpetual markets are designed to balance long and short open interest. Negative funding rates typically return to a positive mean over time. #### **Liquidation Risk** **What it is:** When perpetual positions exist, sudden large price movements could trigger automatic liquidations if collateral falls below margin requirements. **Mitigation:** The Aster account on Ceffu regularly monitors positions and frequently settles profit/loss to keep liquidation risk minimal. ### **Prospects & Future Growth** During market downturns, USDF offers a reliable option for steady returns. Staking USDF for asUSDF unlocks an additional yield opportunity from the previously described delta-neutral strategies. Aster sees significant market potential for expanding yield sources. Future opportunities include: * Integration of real-world assets (RWAs) like US Treasury Bonds * New arbitrage strategies and on-chain mechanisms * Enhanced capital efficiency and yield generation Aster's commitment is to provide safe, productive investment options even during challenging economic conditions.