It is "too early to speculate" on potential rule changes after Italy used controversial tactics against England, says the sport's world governing body.
The Azzurri refused to engage in rucks as the home side won Sunday's Six Nations match 36-15 at Twickenham.
England boss Eddie Jones criticised Italy's tactic, and said law-makers should have a "very close look at it".
A spokesperson for World Rugby told the BBC it could 'clarify' the law, rather than drastically change it.
Italy's plan, which was masterminded by defence coach Brendan Venter, left no offside line after a tackle.
The Azzurri's half-backs then crowded the England backline, unsettling the hosts.
"We challenged people's minds and a lot of credit must go to Brendan Venter for doing what he did," said head coach Conor O'Shea.
England were 10-5 down at half-time but recovered in the second half to secure a bonus-point win.
More to follow.