As was told during the latest YAPC::EU job fair, VERISIGN uses Perl!
If I remember well, they have about a million lines of Perl code in their applications and they are still actively seeking Perl programmers (see Perl Jobs).
If Perl was inherently insecure, should a company like Verisign use it?
A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James
In reply to Re^3: How to answer "Perl is not secure" objections?