Chinese AI cybersecurity tool Artex said it stopped programmers from accessing its source code, acknowledging misuse by "bad actors" after South Korea linked it to several recent bank hacks.Artex was designed to help organisations strengthen their cyber defences through security testing to find potential weak points.But the South Korean government said this week it was "highly likely" Artex had been used in data breaches at more than seven financial institutions, including major banks.Artificial intelligence's ability to find previously unknown ways to hack into computer systems is in the global spotlight, as leading labs release ever-more advanced models.Artex was "abused by…