It appears that there were reports of false positives with Avast antivirus software in relation to optimism.curve.fi in the past. However, it seems that Avast has since updated their software to address this issue. Despite this, there have still been a few reports of false positives. Therefore, it is important to exercise caution when using optimism.curve.fi and to ensure that your antivirus software is up to date. Both classic.curve.fi and its respective side chain equivalents as well as curve.fi are safe and should not pose any issues. It is recommended that users take the necessary steps to ensure their safety when using optimism.curve.fi.