Media monitoring app Mention suffers third-party data breach. Web and social media monitoring app Mention has revealed that a third-party provider has been hit by a data breach. Champs-Élysées, Paris. Mention was founded in the French capital. Image: Ioan Panaite/Shutterstock. Founded in 2012, Mention offers brands a media monitoring app to allow them to leverage filtered data for their overall strategies. Mention provides this service for customers such as Airbnb, Deliveroo, Microsoft and Adobe.