I think I need to report it as illegal filming crime.

If the other party filmed someone's body without consent, the illegal filming crime under Article 14 (Filming Using Cameras, etc.) of the "Act on Special Cases concerning the Punishment of Sexual Crimes" may be applied.

Even if you did not directly witness the filming scene, if traces of filming remaining on the mobile phone, cloud, messenger, etc. are secured through digital forensics, proof is possible.

In particular, even if the other party deleted the video, it is largely possible to recover it through digital forensics.

Therefore, it is important to immediately report to the police and cooperate so that a search and seizure warrant for the other party's mobile phone can be applied for.

If the other party's illegal filming crime charges are recognized, under the Sexual Violence Punishment Act, imprisonment for up to 7 years or a fine of up to 50 million won may be imposed.

In addition, if illegal filming is committed habitually, the punishment is aggravated by up to one-half of the prescribed sentence.

In conclusion, even if you did not directly see the filming scene, if deleted files or transmission records are confirmed through digital forensics analysis, the illegal filming crime can be proven, so it is important to receive help from the police and professional forensic institutions from the early stage.