This is a highly recommended version of phpnuke that we recommend to all of our patrons @
Xtremest as well. The 7.6 version with their flagship Nuke Sentinel has caught 11 hackers alone on our site. THE BEST!!!
Nevertheless, if you are seeking a long term relationship and security within your website I recommend the same as Coldblooded did and use the version of RavenNuke instead of newer version.
Especially, 8.1 - I can't count the numerous flaws and problems with this version...

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Glad to see others promoting a more secure version...