I'm hearing rumors of people generating the same keys as other wallets and being able to access their coins.
Any news?
In an effort that was reminiscent of attempts last year that succeeded in slowing down activity on network, the owner of an address associated with the wave of spam attacks is sending commands meant to use up 'gas', ethereum's unit of computational power.
That is bad news from http://www.coindesk.com/ethereum-developers-stymie-blockchain-spammers-latest-attack/
Hope answers your questions.
This is the interesting part from article:
"Within an hour, the popular implementation released a new version called 'Hat Trick', complete with a security fix that changed the structure of some types of data that were being utilized in the new attack.
As of press time, the attacker had not sent transactions from the account for an hour."
That means the attack was largely contained.
http://www.altcointoday.com/smart-contract-upgrade-glitch-halts-vancouver-exchanges-67000-ether-funds/
That is the new info about the problem on smart contract of ethereum.