So-called "pitchsiders" are continuing to infiltrate Big Bash matches by sneaking laptops and mobile phones into grounds, while it has emerged a number of spectators have been evicted this summer for partaking in an activity cricket authorities are intent on stamping out of the game.

Security and anti-corruption officials are remaining vigilant as Cricket Australia confirmed on Monday it was aware of a number of incidents over the past few weeks involving spectators being tossed out of Big Bash matches for partaking in suspicious activity.

No room for suspicious activity: Fans of the Big Bash enjoying the action. Credit:Getty Images

While Cricket Australia refused to elaborate on specific details because the evictions were "operational matters", Fairfax Media understands a number of spectators who made their way down to the MCG on Thursday for the Melbourne Stars and Brisbane Heat match were evicted for using laptops and other devices while sitting in the crowd.

It is believed even more spectators at the same match were approached by security for using mobile phones to relay information about match conditions and up-to-the-second information about the game at hand. While it appears the issue is not confined to one state in particular, the spectators were evicted from Big Bash matches because they breached various terms and conditions of entry enforced at different grounds around the country.