Mr Hoskin was tortured to death by a gang in 2006
Cornwall County Council says it is making "significant progress" in implementing plans to prevent the abuse of vulnerable children and adults.
It follows 30 recommendations made in a serious case review of the murder of Steven Hoskin in 2006. Three people were jailed over his death.
The case review identified at least 40 missed opportunities to help him.
Councillors said progress made included improving the way in which information was shared between agencies.
Steven Hoskin, 38, from St Austell, who had had learning disabilities, was tortured and then taken to a viaduct in the town by a gang and forced to hang from railings in July 2006.
One of his killers then stamped on his hands causing him to fall 100ft (33m).
The serious case review by the Cornwall Adult Protection Committee looked at the circumstances and found more than 40 warnings and chances for intervention were missed by the agencies involved.
It said that police and social services failed to speak to each other every time he appeared on their systems.
The review said he was failed by "every part of the service system" in Cornwall.
The council agreed on an action plan to prevent similar cases of abuse in the future.
It said one of the action points was to improve communication between agencies.
The council added that it was developing an electronic database to be installed in the county's minor injury units, to ensure vulnerable people were identified.
Two people were jailed for Mr Hoskin's murder and one for manslaughter.