Tom Arscott has received a written warning from the Rugby Football Union (RFU) following an investigation into Sale Sharks' allegation he leaked tactical information to Premiership rivals Bristol.
The RFU concluded Arscott "discussed tactical information" relating to Sale's lineout with his brother and Bristol full-back Luke Arscott ahead of their match on New Year's Day.
Luke was an unused replacement that day at AJ Bell Stadium in Salford, while Tom was not in the hosts' matchday squad.
The act was deemed to be "at the lower end of the scale of seriousness" and not in breach of RFU Regulation 17 - which relates to anti-corruption and betting - due to the "absence of any evidence of betting or fixing".
Along with his warning for his conduct, Arscott will be required to undertake a relevant World Rugby education module.
Prior to the RFU's decision, Sale conducted an internal investigation and terminated Arscott's contract.
RFU head of discipline Gerard McEvilly said: "In determining what action should be taken following the investigation we have taken into account that Tom Arscott has already paid a heavy price for his conduct in having been dismissed from his employment by Sale Sharks.
"These issues have arisen because of the inappropriate sharing of information while players were socialising in the same hotel before the match.
"Therefore, the RFU is strongly recommending to both clubs that all their players are reminded of their contractual and ethical obligations to their employing clubs and of the problems that may arise should confidential/inside information be passed between individuals.
"I would like to thank both clubs for their significant assistance in this investigation."
The RFU stated that, although the information had been passed to two Bristol coaches, the club had not failed to comply with relevant reporting requirements or changed their game strategy to act upon positional changes.