uhh what?
please try to find link or source and at least describe what you remember about it. I don't have statistics or something, but I think that Electrum is the most used light client in Bitcoin world and you just scared me..
related thread is here: https://bitcointalk.org/index.php?board=98.0 and I don' see any security issues described so far..at least from last weeks
Damn , you are lucky it took me some time to find the thread but here you go : https://bitcointalksearch.org/topic/hardware-wallets-are-unsafe-1125154
I'am not sure if that guy is an alternative account or simply a newbie who saying random stuff but I personally took it seriously because BTC is money and I care about my money safety .
I'am not sure where he read that though .