💡 Detailed Explanation
「～にかかわる」 means 'related to', 'concerning', or 'affecting', often implying a serious or critical connection. In this context, the issue directly impacts or is critically related to personal information, requiring a cautious response. While 「～をめぐる」 also means 'concerning' or 'surrounding', it often implies discussion, debate, or various aspects around an issue, rather than a direct, critical impact. 「～にもとづく」 means 'based on' or 'founded on', which doesn't fit the context of the problem being *about* personal information rather than *based on* it. 「～にまつわる」 means 'related to' or 'associated with', often used for stories, legends, or events, lacking the direct and serious implication of 'にかかわる' needed for 'a cautious response'.