I don't think dual-key PGP encryption has been breached; at least, there is no publicly-available evidence that it has ever been cracked by anyone, that I am aware of.
I guess "publicly available" is the rub here.
In the days before my reversion to the Faith I hung around with the Cypherpunks (Zimmerman et al.) in the SF Bay Area, even dated one of the most brilliant of them (until the insidious ravages of end-stage Lyme Disease).
To my and their moral certainty, PGP was broken at will by brute force attacks since the early 90's. The 2025 computer power, especially quantum computing avalaible to .gov/.ZOG, now trivializes breaking PGP.
After my return to the Faith I still bump into old (and new) friends who confirm that PGP is as effective as placing a letter in an envelope.
My experiences certainly are not "publicly available," but nobody should be so foolish as to place absolute faith in any form of encryption. Do I use encryption? Emphatically, yes!!! I heartily encourage the use of encryption when available, but I have no illusions. If you are a target, your encryption, even multi-nested non-NIST algorithms, will be broken.