Some Java backends employ methods that trigger explicit type casting, leading to high-bit truncation where only the low-order 8 bits are retained. Attackers exploit this by crafting 'ghost text'—a sequence of Unicode characters or symbols whose low-order bits match malicious ASCII commands—effectively bypassing security detection mechanisms.. This rule supports to defend the A6: Vulnerable and Outdated Components of OWASP Top 10 - 2021. Other reference:None