Most recruiting comes from legal extremist groups with linked ideologies.
Usually terrorists will approach you, more than the other way around. After you’ve been profiled you may be invited/coerced to join.
If they want you to make an “action” (they usually not call them terrorists attacks), they will provide you with minimal information, and the supplies will only be provided strictly when needed. Depending on what you are doing it can be hours of weeks before the action. Training will be non-existent. Most terrorist actions do no require training, just a human to do simple actions. If you are in an active warzone it would be different, you’d be trained as militia. But for typical domestic terrorism they won’t really provide training right of the back. If with time you grow into the organization they may train you in shooting if you would be doing actions which require shooting a weapon, or in explosives if you are going to be more involved with that. But terrorist groups tend to rely in recruiting already trained people more than in training them themselves.
As for ideological brainwash, you are expected to have some good degree of radicalization before joining, but a great degree of brainwashing will happen in jail once you are caught. A terror group is another prison gang, and they will try to keep you inside their ideology while in prison so you can continue working inside and, maybe, outside once you are out, probably not with direct actions anymore.
At least that’s my understanding on what happened with ETA and yihadism here in Spain
I will talk about Islamic terrorism that is not limited to ISIS.
Short answer: They are mostly invited. Recruiters go to mosques and look for people who share the same ideology.
These recruiters often come to countries where Islamic conservatism is the main group in the country. These terrorist groups have some specialized people where they are very good at brainwashing people. And they work in small groups, often splitting up and going to their own destinations to find people with potential in the many mosques in small towns or villages. Most new members are invited by others who are already members of the group and they accept the invitation easily because they share the same ideology.
Most recruiting comes from legal extremist groups with linked ideologies.
Usually terrorists will approach you, more than the other way around. After you’ve been profiled you may be invited/coerced to join.
If they want you to make an “action” (they usually not call them terrorists attacks), they will provide you with minimal information, and the supplies will only be provided strictly when needed. Depending on what you are doing it can be hours of weeks before the action. Training will be non-existent. Most terrorist actions do no require training, just a human to do simple actions. If you are in an active warzone it would be different, you’d be trained as militia. But for typical domestic terrorism they won’t really provide training right of the back. If with time you grow into the organization they may train you in shooting if you would be doing actions which require shooting a weapon, or in explosives if you are going to be more involved with that. But terrorist groups tend to rely in recruiting already trained people more than in training them themselves.
As for ideological brainwash, you are expected to have some good degree of radicalization before joining, but a great degree of brainwashing will happen in jail once you are caught. A terror group is another prison gang, and they will try to keep you inside their ideology while in prison so you can continue working inside and, maybe, outside once you are out, probably not with direct actions anymore.
At least that’s my understanding on what happened with ETA and yihadism here in Spain
This is mostly correct, just for addition:
I will talk about Islamic terrorism that is not limited to ISIS.
Short answer: They are mostly invited. Recruiters go to mosques and look for people who share the same ideology.
These recruiters often come to countries where Islamic conservatism is the main group in the country. These terrorist groups have some specialized people where they are very good at brainwashing people. And they work in small groups, often splitting up and going to their own destinations to find people with potential in the many mosques in small towns or villages. Most new members are invited by others who are already members of the group and they accept the invitation easily because they share the same ideology.