Earlier this month, a fan was jailed for running on to the pitch and head-butting Sheffield United’s Billy Sharp at Nottingham Forest’s City Ground after their Championship play-off semi-final win against the Blades.
Swindon Town players were “physically and verbally abused” after their League Two play-off semi-final defeat at Port Vale.
The EFL will meet various authorities during the close season to discuss a range of measures that could potentially be introduced to prevent such incidents from happening again.
“As part of this work the introduction of tougher but proportionate sanctions will now also have to be considered with your respective club in the early part of next month,” Birch added.
“For our part, we will need to discuss what further measures could be introduced for the new season, including the potential use of capacity reductions, financial penalties, or other similar mitigations.”