He created the DDoS service when he was only 15.
A 19 year-old Hertfordshire man has pled guilty to running the Titanium Stresser booter service that offered distributed denial of service (DDoS)-as-a-service.
Such services are often marketed as innocuous and legitimate stress testing tools, but are instead often used for cheap and effective attacks of websites.
Prosecutors say Adam Mudd earned more than US$385,000 (£315,000 A$505,000) by renting out the service he created as a 15 year-old.
He pled guilty at London’s Old Bailey to two offences under the Computer Misuse Act and one money laundering offence and will be sentenced in December.
Bedfordshire Police say in a notice that Mudd's now dead Titanium Stresser was used in many thousands of DDoS attacks by criminals renting the service.