today I experienced an unexpected transaction from one of my wallets, all my assets were sold automatically, this is the first time I've experienced this, I didn't protect this wallet with a PIN and 2fa
can it be delayed after I use 2fa and PIN for all transactions?
First and foremost, which wallet do you use? Since you've mentioned 2FA and it involves a mobile number, that would be a centralized wallet. The thing is if you have set an "easy to remember" password and didn't enable 2FA, it would likely lead to our crypto wallets to get compromised and having our assets drained as the hackers would initiate the unauthorized transaction easily.
In all of my centralized wallets and exchanges aside from the password, I also have 2FA, pin, fingerprint and Google Authenticator as we needed extra layers for protecting ourselves against these unauthorized transactions.