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Even if the data that was leaked is mostly publicly available, having one large data dump makes it easier for attackers to run attack campaigns where they send mass phishing emails to the 33.7 million unique email addresses at the impacted organizations, so while it’s important to quickly investigate this specific breach and find the root cause, it’s even more important for the impacted organizations to ensure that they have tools to be able to monitor their networks for anomalous activity and stay vigilant.