According to a Tether Website Announcement, a significant portion of funds was improperly removed from the Tether Treasury wallet. As much as $30M has been transferred to an unknown Bitcoin address. The attacker used the following address to transfer the funds: 16tg2RJuEPtZooy18Wxn2me2RhUdC94N7r.
If you receive any Tether from this address, do not accept them as they have been flagged as stolen and will not be redeemed for USD.
Nevertheless, the Tether team is presently working on new builds of Omni Core to prevent the hacker from moving the funds to an other address. A Tether Hard fork should follow soon.
We remind you that Tether issuance has not been affected by this attack and the tokens will be returned to the Treasury Wallet once the Omni Layer protocol update takes place.