Generally, IDP.generic warning is caused due to an outdated version of your Antivirus. Developers of various antivirus softwares do not frequently update, leading the softwares to push fake positive notifications.
idp generic Avast or AVG is caused due to an old version of Avast or AVG antivirus software and is generally fixed by updating the software to the latest version. Another potential cause of the IDP generic virus is an old, outdated Java software version.