[headShrinker]

True, but people tend to take security in a very strict manner. (With just cause.) The mod could have said, "was not affected", but instead and using improper word use, said "is not affected[sic]". Someone can correct me if I'm wrong, but I believe the proper use is either, was not affected or is not effected, not some combination of the two. The true point is, the statement is inherently unclear as to when, much more so when you introduce faulty word use.

[judk]

Proper use is to communicate abundant details to remove any ambiguity in phrasing.

[LocalPCGuy]

Not when you run a service that is a very hot target, in that case, you give as few details as possible to make sure the attack spectrum is as large as possible.