Yowers, looks like there was a flaw in the multi sig wallets for Ethereum. The issue is/was with the “multisignature” wallets created after the 20th July.
Parity multisignature wallets also experienced a vulnerability in July this year that allowed an unknown hacker to steal nearly $32 million in funds these guys are not having a good time.
At this point there is no wary of telling how much exactly has been lost but estimates are at approx 20% of the whole Ethereum network. A figure around $300 million.