Hello,
I saw that the founders of Samourai Wallets were arrested and that the website to download the wallet was frozen. I guess this has made users of this wallet unsecured.
Do you think this can happen to other software wallets ? Especially Electrum ?
Yes,
assuming government don't want their citizen store Bitcoin or altcoin on self-custodial wallet. But for now, there aren't many excuse to get rid of Electrum or other wallet. Electrum by default doesn't offer much privacy either.
But Joinstr is not bundled with Electrum or even mentioned once on its website. What are you on about?
In addition, the website clearly state it's not available on Bitcoin mainnet for now.