A hacker has exploited a vulnerability in the Dogecoin network known as the "DogeReaper" vulnerability, which led to the crashing of approximately 69% of its nodes. This exploit was carried out using an old laptop in El Salvador by Andreas Kohl, co-founder of Bitcoin sidechain Sequentia, who announced the exploit on December 11, 2024.   The vulnerability was initially disclosed by researcher Tobias Ruck, and if exploited maliciously, it could have potentially crashed the entire Dogecoin network by causing nodes to experience a segmentation fault, where a program tries to access memory it's not supposed to, leading to a crash.   At the time of the exploit, Dogecoin had 647 active nodes, which dropped to 315 after the attack, according to data from Blockchair. The vulnerability was deemed low severity by Coinbase, offering Ruck a reward of $200. However, the potential for this vulnerability to disrupt the network significantly was high, as it could halt transactions and block creation for an extended period if not addressed.   From Grok