As a successful messaging ISV, you recognize the importance of safeguarding your Twilio account from bad actors who can impact your customers' sending practices and lead to compliance issues with carriers. To mitigate this risk, you leverage the power of Twilio's Subaccounts to differentiate customers from each other, allowing for individual configurability and decentralizing security risks. You also develop internal filtering algorithms to catch bad sending before it reaches Twilio, utilize the Lookup API to gut check recipient lists, and create an in-house compliance team to monitor traffic and filter out problematic content. Additionally, you consistently monitor error rates and opt-out rates to track trends and tackle large amounts of bad senders. By implementing these strategies, you can ensure that your messaging solution sees minimal filtering and compliance issues, ultimately thriving in the competitive landscape.