Your safety is the most important aspect of hiring someone to accompany you on your travels.
I have opted to undergo (and have passed) a thorough and current background check. Here's what's included in background checks provided by SterlingBackcheck, the world's trusted background check leader.
A social security number trace results in a 7-10 year history of past and present addresses connected with that unique identifier. The SSN verification report also lists the names associated with those addresses, thereby ensuring that the background check has access to a full set of AKAs ("also known as") including aliases, maiden names, nicknames and names misspelled or variously transliterated across languages.
National Criminal Record Database Search
Search of State, County and Federal Corrections criminal record databases, including misdemeanor and felony records. Any aliases (AKAs) uncovered during the SSN Trace are also checked.
Sex Offender Registry Search
Sex Offender search covers all 50 states and is intended to reveal information regarding sexual crimes, including the severity of the offenses, personal defendant identifiers and arrest dates.