noun
upskirting
Refers to the act of secretly taking photos or videos up a woman's skirt, typically in public places. A specific form of voyeurism; often discussed in legal and news contexts.
See also: 盗撮
スカート内盗撮は犯罪行為です。
Upskirting is a criminal act.
駅でスカート内盗撮の疑いで男が逮捕された。
A man was arrested at the station on suspicion of upskirting.