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PSA: Be careful with online SMS services
Removed by modI just used temp-number.com to receive a verification code (no cell towers where I live). I was shocked to see that someone had sent their Bitcoin wallet info to the service.
I got their username, password and verification code. Their account is worth over 60BTC. That's over $2,000,000.
No I did not steal from them, but holy cow I can't believe how incredibly stupid that is.
So be mindful when using these, they're fully open to the public to read.
How did you see formerly received messages on the number you booked? I've used the service a couple times and wouldn't know of an option to see messages received before the moment you booked the number.
It showed messages going back a few hours. There's a warning on the site informing you of this.