Marcus Hutchins was confined in Las Vegas on his way back to Britain from an annual meeting of programmers and IT security experts. A striking jury prosecution accuses Hutchins of making and circulating malware known as the Kronos managing an account Trojan. Such malware contaminates web programs, and at that point catches usernames and passwords when a clueless client visits a bank or other put stock in the area. It came as a stun to a cybersecurity group which had aroused behind Hutchins, whose fast deduction helped control the spread of the WannaCry attack.”]
Source: https://hackercombat.com/hacker-behind-bars-us-assisted-paralyze-ransomware-attack/