This is a response on MySQL security: inconsistencies and Less known facts about MySQL user
grants.
As far as I know the privilege to grant PROXY privileges is also
not very well understood. I blogged about that some time ago.
In addion to the already highlighted issues with GRANT
replication and grants can very well create an unwanted
situation:
master> SHOW GRANTS FOR 'user'@'host'\G[Read more]
*************************** 1. row ***************************
Grants for user@host: GRANT USAGE ON *.* TO 'user'@'host' IDENTIFIED BY PASSWORD …