With all the heat today, I'm curious as to whether there is any possability of PGP encrypted messages (encrypted off-market) to be cracked. I saw an old post citing a large volume of users using BCPG v1.6. I know the gold standard is GnuPG, but are the other "versions" of PGP such as BCPG v.1.6 secure?
Yes but not easily.
No form of encryption is uncrackable.