stop using this wallet, run a virus scan to see if you have any malware on your computer and start using cold storage.
Of course, I do not use it anymore. I was surprised at the speed with which the bitcoins were withdrawn. Almost instantly. However, I used the same purse in the mobile application BitPay. When Elektrum was closed, the received transaction in a small number of coins was not spent. Opened the electrum - also was not spent. What about the vulnerability, when coinciding cases of opening a malicious site and purse at the same time?