From an email annoucement earlier today:
Safeguarding the trust and security of our users is of the utmost importance to Edmodo. We are reaching out to you because Edmodo recently learned about a security incident potentially affecting the accounts of Edmodo users. We promptly retained leading information security experts to investigate this incident and reported the incident to law enforcement.
Our investigation has now confirmed that user names, email addresses, and hashed passwords were acquired by an unauthorized third party. The passwords were "hashed" (or encrypted) using the strong and robust bcrypt algorithm, and they were also "salted," which adds an additional layer of security.
We have no indication at this time that any user passwords have been compromised, but we strongly recommend that all users reset their passwords as soon as possible.
To reset your password:
1. Go to the Edmodo website and log in to your account.
2. Click on the "Password Reset" link in the notice at the top of the page.
3. Enter your current password, and then create a new password.
If you used the same password on any other site, we encourage you to change your password there as well.
Thank you for your understanding as we work through this issue together. Protecting the security of our users is critical to Edmodo, and we are committed to providing a safe and secure experience for our users. Please know that we are taking additional steps to increase the security of our platform.
If you have any questions or need assistance resetting your password, please visit the Edmodo website and go to our Support Help Center.
Thanks again for making Edmodo such an amazing community and resource to help all of us on our common goal: Helping all learners reach their full potential.
The Edmodo Team