## Difficulty
Easy
## Category
Forensics
## How To Solve
First, determine the file type of ```darknetdiaries```:
```
> file darknetdiaries
darknetdiaries: Audio file with ID3 version 2.3.0, contains: MPEG ADTS, layer III, v1, 128 kbps, 48 kHz, JntStereo
```
To play the audio, convert to a file with audio extension (e.g., .wav, .mp3). Open the audio file in an audio editing program of choice that can show the spectrogram. The flag can be read from the spectrogram:

![screenshot of spectrogram with flag ](flaginspectrogram.png)
## Flag
`IGCTF{sp3cTrOgr2m}`