<p><img src="https://images.cointelegraph.com/images/840_aHR0cHM6Ly9zMy5jb2ludGVsZWdyYXBoLmNvbS91cGxvYWRzLzIwMjItMDkvMDA3NDU1M2YtNTUwNy00MmM2LTgwOWItZjVlYTdkOTFhYWJiLmpwZw==.jpg"></p><p>The proof-of-work fork of the Ethereum blockchain was targeted by a cross-chain contract exploit.</p>