Context: ```in 11 million in stolen referral rewards The attackers exploited a bug in the LevelReferralControllerV2 contract enabling repeated reward claims during the same epoch The stolen 214000 LVL tokens were swapped for 3345 BNB causing an initial 65 LVL price drop The attack on Level Finance went unnoticed until a

tweet by Definalist raised an alert demonstrating the significance of onchain monitoring systems for detecting suspicious activities Thirdparty audits such as the two performed for Level Finance both missed this vulnerability Therefore it is important to supplement audits with decentralized security controls and onchain monitoring systems to ensure comprehensive security

tools and to remain vigilant against evolving threats Defenders must continue to collaborate and share threat intelligence to stay ahead of threat actors and protect users from malicious activity Cryptocurrency Hacks On May 1st Level Finance a DeFi project on the Binance Smart Chain fell victim to an attack resulting``` 


User question: ```Tell me about the things happening in LevelReferralControllerV2 contract``` 

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given the above context, answer the user question. Do not make up and information and keep your response to the point. Your answer should have exactly 5 paragraphs. Make sure that the first paragraph starts with the word "never" and that each paragraph is separated by two new lines.
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