PS4 Exploit: 5.05 Webkit exploit released, 4.55 functional Jailbreak probably only a matter of days - Wololo.net
PS4 IPv6 UAF 6.70-6.72 Kernel Exploit with Patches, Maybe More Stable! | PSXHAX - PSXHACKS
PS4 exploits: the status for 5.5x owners (5.50, 5.53, 5.55) - Wololo.net
PS4 5.50 Jailbreak Archives - Wololo.net
Qwertyoruiop: "I don't have a PS4 5.50 kexploit, and no plan to work on it short term" - Wololo.net
PS4 FW 5.05 kernel exploit finally set for release as Sony reveals launch date for the PlayStation 5 - NotebookCheck.net News
group bigboss-kys on Twitter: "The status of PS4 Hacking If you own a PS4 running firmware 4.55 or lower, congratulations, you can Jailbreak your PS4 and do a bunch of cool stuff