WalletGenerator.net VS block_io-nodejs

Without being able to look at your wallet, I can’t judge exactly what happened when. However I will point out that the code on https://github.com/walletgeneratornet/WalletGenerator.net hasn’t changed since before the vulnerabilities came about. Therefore I would assume you downloaded the code from the live site during the period it was vulnerable. And I would further assume that you immediately generated and used a physical paper wallet. This would have exposed your key, either because it phoned home or because the wallet you generated was one of a known non-random set. Either way, on checking the wallet and discovering coins in it, the bad actor was able to drain it either immediately or at a future point in time.

I found a website called walletgenerator.net that lets you create paper wallets, but back in 2018 a vulnerability was discovered where duplicate key pairs were generated and potentially stored on the server. They provide the website source code's GitHub repo for the at the bottom of each page. My question is: if you were to download the source code and run it on an offline PC, would it be safe again?

You can create a paper wallet (just one private code and one public address) based on your random mouse movements. There is a website for this. https://walletgenerator.net/ Download the website and run it on an offline computer (to be sure your address isn't sent back to anyone) and print out the paper go to atm to deposit money. I did this for a small "buried" treasure if any kids solve a cryptographic puzzle on a map in our home.

So I want to create a paper wallet for PIVX cryptocurrency, did some research online and stumbled upon https://walletgenerator.net/

As an example, I create a new keypair at https://walletgenerator.net/ : - Public 12gycnkMdc8MgLZjZHAjhf7wG5J3n9Yyii - Private 5JFTbTKucZa9WZCZemCBWF2MhxSGwLmqwotiY4THYY1SW8xbQXG So, if I import that private key into Electrum, I get the same public key. What if I generate a new receiving address?

If you're looking for something a little more sophisticated this is more likely what you're looking for. https://walletgenerator.net/

I generated this wallet using walletgenerator.net last year. I put about 1 bitcoin in it.

You need Dogecoin network params, like for example I have specified here and integrated here, and then just specify that network whenever you call address related functions, per standard bitcoinjs API docs. You may want to enrich the network params with some fee logic if you need that.