While not yet officially confirmed by The Chronicle of Higher Education, there is evidence suggesting a data breach has occurred there. A reasonable step at this time is to login to your Chronicle account and change your password to something unique to that site.
If the password you used on The Chronicle was also used on other sites, you should also change your password on those other sites. It is never a good idea to share passwords between sites. There are password managers that can help you maintain distinct passwords on different sites and also safely store those to enable easy access when needed. Two examples that I use are LastPass and KeePass. They have somewhat different functionality, but are both good options.