<p><img src="https://images.cointelegraph.com/images/840_aHR0cHM6Ly9zMy5jb2ludGVsZWdyYXBoLmNvbS91cGxvYWRzLzIwMjQtMDUvMTMwYWExNTMtNjhkOS00YjdkLTgwNGItYjFmYzNlNWJhMmYyLmpwZw==.jpg"></p><p>Certain on-chain signs point to a potential white hat, or ethical hacker, looking for blockchain vulnerabilities.</p>