they sent her chocolates. they sent her religious books. >> step three moves the recruit to encrypted communications. by step four the recruit is committed and isis begins to provide operational advice including this travel guide. >> it's what you should pack. a checklist of pills, band aids, particular backpacks to bring. >> reporter: they are exploiting the digital domain to shape perceptions in their favor. and no group has been more prolific in this space. >> america's enanies aemies are evolving. and america has to do the same. >> we have to maintain a robust set of capabilities, overhead,