The scenario is this: the victim's family found out their loved one has been murdered in another country as the victim is a frequent full time traveler (remote / freelance) working on behalf of an agency or hosting a YouTube channel whilst they were on vacation.

There is an issue, the country where the victim was murdered has a high rate of corruption politically speaking (organ trafficking, assassination, human trafficking, sex trade, etc.) so only speculation as to how the victim was killed can be from any of those factors.

If referencing from one of those factors (only theories):

• The victim caught something their government hates showing on camera, so they hired a hitman to assassinate the victim.
• The victim was drugged at the bar by somebody, end up in a organ trafficking ring which resulted in the victim's death.
• The victim was deceived by someone whom they deem friendly but coerced into prositution, then perhaps a pimp killed them.
• The victim may've been abducted to be used as a slave part of a human trafficking operation, then killed for disobedience.

People or onlookers will victim blame in the sense of "TRAVEL ADVISORIES EXIST FOR A REASON, DUH!" basically accusing the victim of traveling in an "unstable region" of the world, but that kind of banter won't help anyone nor will it calm down the grieving family.

Of course, the FBI or equivalent can't investigate it themselves since the crime occurred outside their borders (usually interpol is a intermediary when dealing with international cases) and depends on the country in question, achieving justice is difficult.

The only form of "harm prevention" in this case lies closer to a full travel restriction or outright ban issued by a country's government, advising their nationals against traveling to certain parts of the world due to unrest, crime, war, political instability or terrorism.

However, it solely lies on the individual themselves whether they will adhere to that advice or disregard their word. They are saying that in the sense of it not happening to another person, as these types of cases are a headache to deal with for those involved.

They often lead to a dead end. Yes, cases like that happen: for example, there was a Russian woman who was murdered in the UAE (her body was found in the desert), she was an escort for wealthy clientele (whether they were involved is unclear).