| Clue | Source | Date |
|---|---|---|
| Surveillance equipment | ||
| Hidden surveillance equipment: 2 wds. | ||
| Espionage gadgets | New York Times | 18 Apr 2020 |
| Aids for snoops | New York Times | 21 Jun 2019 |
| Aids for snoops | ||
| Surveillance equipment | New York Times | 21 Feb 2016 |
| Hard-to-find hardware? | LA Times Daily | 28 Nov 2015 |
| Hard-to-find hardware? | ||
| Surveillance stuff | ||
| Hidden filmers, for short |