A new user deleted over a 100 features including the place node in the centre of Montauban, a large town in France.

Just reverted both these changesets:

• https://osmcha.mapbox.com/47075660/
• https://osmcha.mapbox.com/47075279/

Caught and reverted in 15 hours! A few tools where one can review changesets from new users apart from the history tab:

• osmcha-newmapper
• osm-discussion
• osm-suspicous
• newestosm