SandboxEscaper and Nightmare Eclipse both explicitly deny this, but I'm pretty sure they're the same person.

The style is the same, and it appears that SandboxEscaper has previously been fired by MSFT. (they are not dead) https://github.com/BigPolarBear1/The_story

SandboxEscaper, who has not really been very active online, started blogging again right before NightmareEclipse showed up. They've been offering to sell Microsoft related bugs. https://weirdquadratic.blogspot.com

OTOH, there's evidence against my theory in the form of prior tweets by the "ChaoticEclipse0" account, which include references to their age and writing in Moroccoan Darija https://x.com/ChaoticEclipse0/status/1332337678470291459

The twitter account was silent between aug 17 2023 and apr 3 2026, so it's not necessarily the same person using it anymore.