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Well Crypto exchange Bittrex is being sued over a SIM swap that netted criminals 100 bitcoin, currently worth nearly $1 million. The case resembles other recent high-profile heists in which a hacker seizes control of a victim’s cell phone to then loot online crypto accounts: the swap was from cellular carrier AT&T, money was taken from Bittrex, and the hack took control over the victim’s online identity.

Source:- https://www.coindesk.com/bittrex-target-of-latest-1-million-crypto-sim-hack-lawsuit