This is a serious flaw with smart contracts that use onlyOwner permissions, because a person can just needs to know the public owner address and then can invoke the RPC eth_call passing setting the sender with the owner address and now can hijack the smart contract?
The wallet and private key shown in the above screenshot are the COMMUNITY WALLET address and private key generated for the community from https://github.com/pingleware/pingleware-contracts/tree/main/apps/wallet-creator
Creating a community wallet permits demonstrations without risk. You can use the Community Wallet to try the pre-release version of the Ethereum Contract Creator at https://snapcraft.io/ethereum-contract-creator
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Snaps are applications packaged with all their dependencies to run on all popular Linux distributions from a single build. They update automatically and roll back gracefully.
Snaps are discoverable and installable from the Snap Store, an app store with an audience of millions.
If you’re running Kubuntu 16.04 LTS (Xenial Xerus) or later, including Kubuntu 18.04 LTS (Bionic Beaver) and Kubuntu 18.10 (Cosmic Cuttlefish), you don’t need to do anything. Snap is already installed and ready to go.
Versions of Kubuntu between 14.04 LTS (Trusty Tahr) and 15.10 (Wily Werewolf) don’t include snap by default, but snap can be installed from the command line as follows:
sudo apt update
sudo apt install snapd
To install Web3 Signing Utility, simply use the following command:
sudo snap install web3-signer
Browse and find snaps from the convenience of your desktop using the snap store snap.
Interested to find out more about snaps? Want to publish your own application? Visit snapcraft.io now.