My crypto wallets on AWS got hacked/stolen

I just found two of my MetaMask wallets got hacked and most of cryptos inside were transferred out of those wallets last month. I lost about 6 ETH and some other alter coins.

I was running a NFT trading program on AWS so I had to put the private key of my wallets in the code file of the program. I stopped running it by the end of 2025 since the NFT market was almost dead. After that, I shut down the AWS instance and deleted it. I didn’t touch the image and snapshot until last month. I noticed it still incurred a monthly bill so I deleted the image and snapshot last month. My wallets got hacked right after that.

I suspect an AWS backend employee scanned my image files and then got my private keys. I have no evidence but it should be it. I have 4 private keys on my local computer. If my computer were hacked, all 4 wallets would have been stolen. The 2 wallets got stolen were exactly the ones I put on AWS.

I am not trying to get my money back, which I know is impossible. I just want to warn people who are doing similar things on AWS or other cloud services. Keep it in mind when using them.