Re: Nammar Grazi
The "extra vulnerabilities" is the subject of the "none are sufficient..." Since the subject is plural, the verb should match. Consider this rewrite:
The 77-page report on [TrueCrypt] dug up extra vulnerabilities, but the report says that none of the vulnerabilities are sufficient to undermine [TrueCrypt].
On the other hand, the "77-page report" is 3rd person singular, so "say" should be "says".
The confusion comes from having two subjects with accompanying verbs scattered throughout the sentence.