OpenSSF/OSV advisory MAL-2023-1273 confirms this npm version as malicious. The OpenSSF Package Analysis project identified 'proton-account' @ 99.99.999 (npm) as malicious.
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in proton-account (npm)
Details
The OpenSSF Package Analysis project identified 'proton-account' @ 99.99.999 (npm) as malicious.
It is considered malicious because: - The package communicates with a domain associated with malicious activity.
Decision reason
OpenSSF Malicious Packages via OSV confirms proton-account@99.99.999 as malicious (MAL-2023-1273): Malicious code in proton-account (npm)