In order to force someone to be kidnapped you need someone to hate dedsec.
For this I went to one of the restricted areas. Any will do but I used a Clan Kelley one. Stay outside and use a drone as its much easier and means you won't accidentally kill them.
Once you have located your soon to be kidnapper, hold
to get their information. Notice that they already have a red thumbs down, this means they only dislike dedsec a bit. Need to turn that to hate.
To do this save this person to your recruits so you can view them in your team. For the next part you will need the deep profiler unlocked.
In your team menu hover over this individual (will be at the bottom of the list) and use the deep profiler on them. Look at their schedule and you will see activities involving another person such as eating with veronica(sister). If you press
to investigate this and mark it on your map you can travel there. Use the in game wait tool that pops up when you arrive and you will see both your potential recruit and their companion. Kill their companion and no one else.
When you do this you will be notified your potential recruit now hates dedsec. Brilliant.
Next part is to wait 24 in-game hours. I sped this up by finding someone else, and going to their schedule and waiting again. After this 24 hours Bagley will let you know your actions have influenced your potential recruit to kidnap one of your own.
Complete this mission, rescue your operative and the achievement will pop when the mission completes.