Group 1 - The article highlights the increasing security concerns among billionaires and CEOs due to rising public resentment towards the wealthy, exacerbated by recent violent incidents involving high-profile individuals [1][2] - A significant surge in demand for personal security services has been reported, with some security firms experiencing a 15-fold increase in threat assessment requests compared to previous years [2][4] - The security industry is facing a shortage of reliable personnel, leading to the emergence of fraudulent security experts, as the lack of national standards makes it difficult for clients to distinguish between professionals and scammers [2][3] Group 2 - Most billionaires do not employ full-time bodyguards but instead utilize various security measures, including monitoring for online threats, personal information protection, and residential security systems, with costs ranging from $200,000 to over $1 million annually [4][5] - High-profile companies have been known to cover the security expenses of their executives, with notable examples including Snap, Alphabet, and Meta, which have spent millions on personal security for their CEOs [5][6] - The article discusses the unique security challenges faced by the children of billionaires, who are often at risk of kidnapping and other threats, leading parents to adopt discreet protective measures without their children's knowledge [9][12] Group 3 - The article notes that while there is heightened concern for children's safety, many wealthy families do not employ visible security measures for their children, as they fear it may hinder their normal lives [11][12] - The personal security industry is rapidly expanding due to the heightened focus on safety among the wealthy, although this trend may be temporary unless incidents of violence against the rich continue to rise [12]