Dangerous plugins/extensions?

[Davilac]

These plugins and extensions are being released can be bad for you forum in some cases? If a new version of vbulletin is released and plugin/extension is not updated can be a problem for my forum?

Also would be nice if you explain me differences between hacks, exntesions, plugins...

[Noppid]

Hack: Means a vBulletin PHP file edit is necessary. There may also be files to upload and plugins to install.

Extension: Means New files are added to the vBulletin php files and the mod may also use a product and plugin code to add features to vBulletin. No vBulletin php files are edited.

Plugin: a piece of code that is added to the internal workings of vBulletin via the ACP plugin system via an XML file that adds functionality to vBulletin. No new files are added and no files are edited.