Table 1. Construct items.

Construct	Items	Question	Source
Perceived severity (PS)	PS1	I believe watching on VPW would cause security threats.	[19]
	PS2	I believe watching on VPW would contribute to serious copyright infringement.
	PS3	I believe watching on VPW brings bad watching experience.
Perceived vulnerability (PV)	PV1	I am at risk for security threats from VPW.	[19]
	PV2	Watching on VPW violates my moral obligation of protecting copyrights.
	PV3	My watching experience would be worsened on VPW.
Response efficacy (RE)	RE1	Using SVOD helps me prevent security threats.	[19]
	RE2	Using SVOD is a way to protect and respect the copyright.
	RE3	Using SVOD brings me much better watching experience.
Response cost (RC)	RC1	Using SVOD would be expensive for me.	[37]
	RC2	Using SVOD would be time-wasting for me.
	RC3	Using SVOD would require me much effort.
Self-efficacy (SE)	SE1	I can afford to use SVOD services regularly.	[37,39]
	SE2	I have time to spend on watching films and videos on SVOD.
	SE3	I have compatible devices and payment methods to use SVOD services.
Attitude (AT)	AT1	Using SVOD services instead of watching VPW is pleasant for me.	[40-41]
	AT2	Using SVOD services instead of watching on VPW is the right thing to do for me, for the society and copyright owners.
Subjective norms (SN)	SN1	Vietnamese society encourages people to use SVOD instead of accessing VPW.	[42]
	SN2	People who are important to me or able to influence my behavior use SVOD.
	SN3	People who are important to me or able to influence my behavior would think that I should use SVOD.
Behavioral intention (BI)	BI1	I intend to start to subscribe SVOD services in the future.	[44]
	BI2	I will try to use SVOD services for watching videos to avoid accessing VPW.
	BI3	I plan to frequently use SVOD services instead of watching on VPW.
Behavior (BE)	BE1	I have been using SVOD services very frequently.	[33]
	BE2	I will definitely use SVOD services in the next months.