What @Pmalek says!
If your own transaction from Kraken was to the address
16i3CQusm4CZDtWGamM9d8Xq5XG1UgGoxC on March, 17th (could also be
1BvKHeGjrYhcEE3oUfJQiYdyKmjn6yMPGn, but I favor my first guess), then you most certainly have a problem with malware on your device or your mnemonic recovery words got in wrong hands. The thief is clearly able to use your private key(s) to sign transactions to the thief's address
1DRJ3pkdSXTgYh59Rv7yUUQBErhTJ5rskB.
Did you reuse your receiving address for your transactions from Kraken to your own wallet? When you copy/pasted the receiving address, have you carefully checked that the pasted result is still your own receiving address?
Did you store your wallet's mnemonic recovery words on some online-capable digital device? Did you make a picture with your mobile device of your written mnemonic recovery words? Does your Electrum wallet use no encryption/no password to unlock it?
