Recently, one of our online resources was blocked by the publisher because it was systematically downloaded by compromised accounts from other countries. We found out the accounts and tried to block the IPs, and also asked the owners of the accounts changed their password. But it does not work. The hackers still steal our journal articles.

If any of you have the experience of dealing with this kind of problem, I would like to get your ideas. You may contact me directly if you like.

Thank you in advance.