Miniatures of people with computers are seen in front of North Korea flag in this illustration taken July 19, 2023. REUTERS/Dado Ruvic/IllustrationWASHINGTON, July 20 (Reuters) - A North Korean government-backed hacking group penetrated an American IT management company and used it as a springboard to target cryptocurrency companies, the firm and cybersecurity experts said on Thursday.The hackers broke into Louisville, Colorado-based JumpCloud in late June and used their access to the company’s systems to target "fewer than 5" of its clients, it said in a blog post.JumpCloud did not identify...