Danny Ross, 44, a computer analyst by profession, who was left for dead required 70 stitches after he was strangled with a belt and then knifed dozens of times in his home, Daily Mail reported.
His attacker, David Johnson, 33, was convicted of attempted murder at Exeter Crown Court Monday.
Ross had been watching television at home in Exeter city centre last August when Johnson knocked on the door and accused him of stealing money from a family member.
Johnson suddenly launched a frenzied attack by first using his belt to throttle his victim until he fainted. He then stabbed Ross 38 times with a kitchen knife.
The attacker is due to be sentenced by court.