This　paper　concerns　fault　detection　filter　design　for　switched　Takagi–Sugeno　(T–S)　fuzzy　systems　against　deception　attacks.　A　fuzzy　fault　detection　filter　with　attacked　input　signal　is　presented　to　detect　system　faults.　Switched　event-triggering　schemes　are　adopted　to　efficiently　utilize　limited　network　communication　bandwidth　resources.　Moreover,　the　filter　adopts　nonsynchronous　premise　variables　with　the　system　to　handle　communication　delays　caused　by　event-triggering　schemes　and　network　transmission.　Then,　the　switched　fuzzy　residual　systems　are　developed　by　utilizing　a　model　transformation　technique.　Furthermore,　by　using　piecewise　Lyapunov　functional　method　and　persistent　dwell　time　(PDT)　technique,　the　resulting　criterion　provides　sufficient　conditions　to　ensure　that　switched　fuzzy　residual　systems　under　deception　attacks　are　mean-square　exponentially　(MSE)　stable　with　an　H∞　performance.　Accordingly,　the　conditions　for　the　co-design　of　fuzzy　filter　and　event-triggering　schemes　are　given.　Finally,　the　effectiveness　of　the　design　of　the　fault　detection　filter　is　verified　by　a　numerical　simulation　and　an　air　path　of　the　TCSI　engine　simulation.　©　2023,　The　Author(s)　under　exclusive　licence　to　Taiwan　Fuzzy　Systems　Association.