Defend the fragile plane in the hangar from approaching guards.
― In-game description
"Security Breach" is the third Master Thief Challenge in "Flight of Fancy" of Sly 3: Honor Among Thieves. It is a variation of a portion of "Cooper Hangar Defense," where Bentley must use the security systems to keep the Black Baron's guards from causing damage to the biplane. The plane only has half the normal amount of Thief Meter.
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Sly 3 Honor Among Thieves - Master Thief Challenge - Security Breach