I didn't know it will happen to a well known Desktop Wallet like Electrum, they even have supported Bitcoin Cash last year and finding out that they were vulnerable made me feel so relieve that I have transferred my Bitcoin to another wallet. Lessons should be learned from this that your money won't be safe not until you provided extra protection for it. We should be aware of the dangers that hackers since day 1 are attracted to Bitcoin now with Bitcoin being more expensive many people with bad intentions are now trying to get it.
Electrum or its maker, ThomasV, does not support bitcoin cash. The wallet's code was forked by another developer, I reckon it was someone here in Bitcointalk, and he called it Electron Cash, an SPV wallet for bitcoin cash.