No wallet is safe if the wallet holder doesn't understand the responsibility of keeping the seeds/private keys safe, so the answer really depends on how educated you are about the wallet and internet security.
The counter point to this is that even if you are the most educated holder in the world, you are not safe if you use a closed source wallet. Of course such a person will not use such a wallet, but I'm saying it to make a point. Even if you don't know anything, there is a big difference in safety between open source and closed source wallets.