Assuming you are not a head of state or other individual with a large security detail and therefore need to do it yourself or with limited resources:
- Avoid time & place predictability. This is generally considered the number one way people are successfully ambushed/assassinated. This means varying your routes and times of departure, arrival and generally varying your routine. Very difficult for most people to do effectively.
- Heighten your awareness at critical points and times. This includes arrivals and departures, choke points and identified danger areas.
- Conduct a personal risk assessment or if possible hire a professional security consulting firm to conduct one for you. This should include a route analysis and review of your routine to identify vulnerable points and times.
- Practice good operational security. Do not share plans or information with those that do not have a need to know.
- Limit your social media presence and what you post. As part of your OPSEC plan be very cautious posting on social media. A huge amount of research and pre-operational activity now happens online. In the past much of that intelligence gathering needed to be done through physical surveillance, now a lot of it can be done online.
- Conduct regular surveys of areas where you frequent, especially home and work to identify regular people, and vehicles and generally establish a baseline. You don’t have to do this yourself. You can have friends or family assist or hire a security provider.
- Consider getting formal training in surveillance detection and attack recognition.
- Consider getting formal training in evasive driving. A very large number of targeted killings occur when the victim is in transit or in/near a vehicle.