A cybersecurity firm responsible for protecting Hillary Clinton’s private server received more than 50 incident reports triggered by unusual activity logged by her network’s firewall, according to documents reviewed by the Washington Examiner.

Some, though probably not all, of the 53 incidents are likely to have been triggered by foreign IP addresses representing hackers. Those addresses originated in countries that had already been suspected of trying to hack into Clinton’s network, including China, Germany and South Korea. What has not been known is the number of times Clinton’s network was targeted.