Protonmail is cop friendly. Any reasonable privacy aware email provider would hash the secondary email, not store it as cleartext. I implemented secondary email hashing for Riseup to prevent exactly this thing, over a decade ago.
https://restoreprivacy.com/protonmail-discloses-user-data-leading-to-arrest-in-spain/
npub1t8…cpu97
2024-05-07 02:37:58
Author Public Key
npub1t8gjkv3deh9fpet6m7r8p9hwvytv4nq7zsfr7ytqcef2ll65m5uqpcpu97Published at
2024-05-07 02:37:58Event JSON
{
"id": "c77418a494548f63939e3dd0e4c0e90cec996ce6afad852196dbd39ddfcd7c37",
"pubkey": "59d12b322dcdca90e57adf867096ee6116cacc1e14123f1160c652afff54dd38",
"created_at": 1715049478,
"kind": 1,
"tags": [
[
"proxy",
"https://kolektiva.social/users/elijah/statuses/112397482609748338",
"activitypub"
]
],
"content": "Protonmail is cop friendly. Any reasonable privacy aware email provider would hash the secondary email, not store it as cleartext. I implemented secondary email hashing for Riseup to prevent exactly this thing, over a decade ago.\n\nhttps://restoreprivacy.com/protonmail-discloses-user-data-leading-to-arrest-in-spain/",
"sig": "f7df58ce3d5ae9f9214694dc12916f18668cead18a3c39cc2c9d6961de1ab01bfc70835b715bbffb5774bbe2e388c5a2e8fb211dec15a214f0d058fa32501c63"
}