Modheader delisted as dormant payload found

[Rubbereon]

This is a bit of old news, but if you use Modheader you should remove it.

https://dev.to/hsb/modheader-was-flagged-as-malware-and-pulled-from-edge-heres-how-to-audit-any-header-editing-3ofl
https://vpncentral.com/modheader-extension-with-1-6-million-installs-contained-dormant-data-exfiltration-code/
https://headersnap.com/blog/modheader-removed-chrome-edge-2026/
https://www.vibeheader.com/blog/remove-modheader-malware-cleanup-guide/

I used to have that on firefox, but it got removed in 2024, so when I moved computers it didn't sync. Mozilla knew something because in 2026 it would also get removed from the Chrome and Edge stores because some security researchers found that it might be a trojan horse since there were things hidden in the addon's code to send data to external servers.

Again, if you use Modheader I recommend you to remove it, it's spyware if not malware.