Note: If you are in the affected user group, at 6 am PT, Thursday, April 15th, we emailed your email address on file from GitHub / GitLab / Bitbucket and added a notification banner in the Codecov application after you log in. About the Event Codecov takes the security of its systems and data very seriously and we have implemented numerous safeguards to protect you. On Thursday, April 1, 2021, we learned that someone had gained unauthorized access to our Bash Uploader script and modified it without our permission. The actor gained access because of an error in Codecov’s Docker image creation process that allowed the actor to extract the credential required to modify our Bash Uploader script.